Why did the US use the atomic bomb against japan?
The atomic bombs were dropped on Japan in order to end the war as quickly and painlessly as possible. Owing to the fact that every other viable option would have resulted in even more bloodshed, the decision to drop the bombs ultimately saved lives.
3 people found this useful
Japan was nowhere near even having the technology or resources to think about it. Answer I've read some about this and the Japanese had made remarkable progress in understanding the atom and theoretical possibilities concerning a bomb. However their program was operating on a shoestring (as I rec…all only 3 or 4 scientists had any involvement) and the resource base was lacking. It is conceivable that given another year or two, with decent funding, the Japanese might have developed a bomb. Delivering it to the USA would have presented a whole new set of problems. Germany on the other hand, had a much more advanced A bomb program although it too was not funded adequately - I'd suggest that was largely due to the demands of the eastern front that was consuming 80% of Germany's war economy output. That, combined with rampant 'creative incompetence' among many in the scientific community, meant that Germany too, was blocked from having an effective weapon by war's end. However - Germany did possess the wherewithall to put out a 'dirty' bomb that could have rendered major urban areas uninhabitable. It was, obviously, never completed. Answer Neither Japan nor Germany had an effective nuclear weapons project during WW2. Germany was the closest, with a reasonably advanced research project staffed by a small (but very highly educated and competent) staff of highly respected physicists. However, their original assessment of the difficulties in building a bomb was that no country would be able to complete it until the very late 1940s at the earliest. Additionally, the Allied powers embarked on a program of systematically destroying key components that the German nuclear program needed to make progress. By the end of the war, Germany had merely managed to build an atomic pile, the precursor to building an actual reactor. They were nowhere near having a completed design, and didn't have any of the industrial infrastructure to produce nuclear fuel. It is doubtful that Germany could have built even a "dirty" bomb. Japan was in an even worse state. They had very few nuclear physicists (and none of the intellectual stature of the Germans), and a large amount of their nuclear technology and nuclear fuel came from Germany. The Japanese nuclear program suffered from a complete lack of funding, too. They hadn't even managed to get a nuclear pile running by 1945, and had very little nuclear fuel available for experimentation. It is pretty much a flight of fantasy to assume that Japan could even have produced a dirty bomb, and likely would never have developed an atomic bomb themselves for a decade or more. So, the answer to the question is: Japan had no possibility of using an indigenously-developed atomic bomb against the US during WW2. (MORE)
Harry Truman thought that by dropping the atomic bombs on Japan, hewould save American lives and end World War II faster. He alsowanted to collapse Japan's means to make war again. He believedthat the loss of a few hundred thousand citizens and the completeobliteration of the enemy country's morale …was a far better optionthan the loss of a few million people from both sides combined anda huge consumption of resources in the midst of a protractedinvasion. Also, it was used to intimidate Soviet Russia since theend of the war was nearing and tension was starting to accumulate. Towards the end of WWII, Japan began to fight what they knew was alosing war in the Pacific. But since the Japanese lived by a mottoin which they would die before they were captured by an American,every last battle would be fought until there were no survivors.Seeing this as a useless waste of lives on both the American andJapanese side, Truman made a hard decision and decided to drop theFat Man and Little Boy on Hiroshima and Nagasaki. His reasoning wasthat if he took many lives at once, Hirohito would finally see thatan end was needed to the senseless killing. Thus, on August 6 and 9of 1945, the bombs were dropped. Civilian casualties were huge;however, as Truman had predicted, Hirohito ended Japan'sinvolvement in the war afterwords, making it so that no moreAmerican lives had to be spent. He had already moved toward demanding Japan's unconditionalsurrender; how best to force that surrender was left to be decided.If the war dragged on, there would many more military and civiliancasualties. If the Soviet Union perceived a weakness by the US, itwould be emboldened in its postwar stance in Eastern Europe. Otherdemocracies would be affected by the policies of the US regardingmilitary actions. Truman chose to act, and nuclear bombs were soonseen as too fearsome a weapon to use in "ordinary" wars. As itturned out, the use of nuclear weapons likely influenced theEmperor of Japan to order the war's end. His concern for his peopleeventually outweighed the loss of national prestige. President Truman had two choices: 1) He could drop the bomb and endthe war quickly or 2) He could send waves of infantry towardsJapan. If he decided to send in infantry to attack Japan, manysoldiers would have died for he knew Japan would not give up soeasily. He knew the Japanese would fight to the death. Also, hepartially wanted to follow through with President Roosevelt'spromise after the attack on Pearl Harbor that America would getnothing more than absolute victory. So to save lives and follow apromise, he dropped the bombs. President Harry S. Truman, speech (6th August, 1945) The harnessing of the basic power of the universe. The forcefrom which the sun draws its power has been used against those whobrought war to the Far East. We have spent $2,000,000,000 (about$500,000,000) on the greatest gamble in history, and we havewon. With this bomb we have now added a new and revolutionaryincrease in destruction to supplement the growing power of ourarmed forces. In their present form these bombs are now inproduction and even more powerful forms are in development. Before 1939 it was the accepted belief of scientists that it wastheoretically possible to release atomic energy, but none knew anypractical method of doing it. By 1942 however, we knew the Germanswere working feverishly to find a way to add atomic energy to otherengines of war with which they hoped to enslave the world, but theyfailed. We may be grateful to Providence that the Germans got VI'sand V2's and in limited quantities, and even more grateful thatthey did not get the atomic bomb at all. The battle of the laboratories held fateful risksfor us as well as the battles of the air, land and sea and we havenow won the battle of the laboratories as we have won otherbattles. Before Pearl Harbour, scientific knowledge useful in warwas pooled between the United States and Britain and manypriceless.helps to our victories have come from the arrangement.Under that general policy, research on the atomic bomb was begun.With American and British scientists working together, we enteredthe race of discovery against the Germans. We are now prepared to obliterate more rapidly and completelyevery productive enterprise the Japanese have above ground in anycity. We shall destroy their docks, their factories and theircommunications. Let there be no mistake, we shall completelydestroy Japan's power to make war. It was in spare the Japanese people from utter destruction thatthe ultimatum of July 26 was issued from Potsdam. Their leaderspromptly rejected that ultimatum. If they do not now accept ourterms they may expect a rain of run from the air the like of whichhas never been seen on this earth. Behind this air attack willfollow sea and land forces in such numbers and power as they havenot yet seen and with a fighting skill of which they have alreadybecome well aware. Although workers at the sites have been making thematerials to be used in producing the greatest destructive force inhistory, they have not themselves been in danger beyond that ofmany other occupations for the utmost care has been take for theirsafety. The fact that we can release atomic energy ushers in a newera on man's understanding of nature's forces. I shall recommendthe Congress of the United States to consider promptlyestablishment of an appropriate Commission to control theproduction and use of atomic power within the United States. Ishall give further consideration and make a further recommendationto Congress as to how atomic power can become a powerful andforceful influence towards the maintenance of world peace. At the end of World War II, few questioned Truman's decision todrop the atomic bombs on Hiroshima and Nagasaki. Most Americansaccepted the obvious reasoning: the atomic bombings brought the warto a more timely end. They did not have a problem with over onehundred thousand of the enemy being killed. After all, the Japaneseattacked America, and not the other way around. In later years,however, many have begun to question the conventional wisdom of"Truman was saving lives," putting forth theories of their own.However, when one examines the issue with great attention to theresults of the atomic bombings and compares these results withpossible alternatives to using said bombs, the line between truthand fiction begins to clear. Truman's decision to use the atomicbomb on Japan was for the purpose of saving lives and ending thewar quickly in order to prevent a disastrous land invasion. The people who are now questioning Truman's motives are often knownas Revisionists, because they attempt to revise common perceptionsof history, proposing alternate theories and motives. As early as1946 they begin to postulate new ideas, but their words only beganto receive credence in the late 1960s and early 1970s. Revisionistscontend that Truman either had ulterior motives in the dropping ofthe atomic bombs or that he used these bombs on Japan for anentirely different reason, one that had nothing to do with savinglives. Most people who were alive at the time of the Hiroshima andNagasaki bombings, especially veterans, subscribe to the"traditional" belief that Truman decided to drop the atomic bombson Japan for solely military reasons. A timely end to the war wouldmean that no land invasion of Japan is necessary. Such an invasionwould have been extraordinarily costly in terms of not onlyAmerican lives, but also in terms of Japanese dead. Ending the warquickly would return soldiers to their homes and allow Americans tobegin a life of normality again. The Revisionists, however, believe that Truman had either partiallyor entirely different reasons for bombing Japan. They believe thatthe destruction of two Japanese cities would accomplish severalthings. Most obviously, it would punish the Japanese for thebombing of Pearl Harbor and the atrocious treatment of Americanprisoners of war. Also, an atomic bombing of Japan is also the onlything that would justify the expense of the Manhattan Project. Ifthis expense was not justified, Truman would have faced aCongressional inquiry into the misappropriation of $2 billion. Notonly did he want to avoid Congressional hearings, but he alsowanted another term of office. His chances of reelection would havebeen nil if it were learned by the general public that he wastedmoney and American lives by shelving a weapon that could have endedthe war more quickly. The final Revisionist claim is that Trumanwanted to give the U.S. and edge in the coming Cold War by showingthat he was not afraid to use these weapons of mass destruction.They also say that Truman should have chosen one of the severalavailable ways to compel a Japanese surrender without an atomicbombing of two cities. The most obvious alternative is an Americaninvasion of Japan. Olympic was the code-name given to the plannedAmerican invasion of Kyushu, one of the four Japanese home islands,if an atomic bomb were not available by late October. Two separateestimates exist to rate the number of American casualties thatwould result from such an invasion. A joint war plans committeecomprised of the army and navy came to the conclusion that 46,000Americans would die in an invasion of Kyushu and later Honshu. Thenumber of American wounded averaged three to one during the lateryears of the war, so according to this estimate, 175,000 Americancasualties were not out of the question. However, these figureswere based on such tentative intelligence that George Marshall, thearmy's chief of staff, bluntly rejected them. A second estimate proposed by Admiral Leahy was much higher. Theinvasion of Iwo Jima caused 6,200 American deaths, and the U. S.outnumbered the Japanese by four to one. Okinawa cost 13,000 U. S.servicemen, and they outnumbered the Japanese by two and one-halfto one. These 13,000 men made up more than 35% of the U. S. landingforce. Consequently, Admiral Leahy came to the conclusion that itwas absurd to think that any less than 35% of the American forcethat invaded Japan would be killed. Based on the estimate of560,000 Japanese soldiers on Kyushu as of early August, Leahypredicted that at very minimum over 250,000 American soldiers wouldlie dead as a result of an invasion of the Japanese islands. It was later found that the troop strength on Kyushu was greatlyunder-estimated, and that by August 6 the Japanese had over 900,000men stationed on Kyushu, nearly twice as many as thought. Leahy'sestimates that the Americans would have a preponderance, when infact the 767,000 American soldiers who would comprise the landingforce were already greatly outnumbered three months beforeOperation Olympic was actually to begin. By November, Japanesetroop strength could easily double or triple, making between500,000 and 1,000,000 American deaths conceivable. These numbers do not even begin to account for the Japanese dead.In Okinawa, twice as many Japanese were killed as Americans. It istherefore plausible that between 100,000 (according to the earliestestimate) and two million soldiers would die in an invasion. Thisnumber does not include Japanese civilians dead, which couldconceivably have been even higher than the number of dead soldiers. Also, if Truman had not used the atomic bomb then congress wouldhave raked him over the coals after the war for having wasted the$2,000,000,000 expenditure developing them by not using them toshorten the war! He might even have been impeached! Another very possible reason was that Truman wanted to avoid havingto us the chemical weapons that had been stockpiled on thedeparture islands for use in the invasion of Japan. The effects ofthese chemical weapons are as horrifying as the effects of thebombs that were used, but could not be limited to their targets.Thus there would have been far more collateral damage if he hadused the chemical weapons instead of or in addition to the nuclearweapons. He wanted to quickly end the war in the Pacific without invadingJapan. It was concluded by military leaders that a second atomic bombingthree days after the first would so terrify and disorient theJapanese leadership they would surrender. A secondary reason wasthe physicists who created the bombs wanted to determine whichstyle of bomb would be the most effective -- the plutonium oruranium based weapon. The only actual decision on the use of atomic bombs made byTruman was to stop using them after the first two unless hepersonally authorized more later. Had he not done this, there wasanother one ready that Los Alamos had already shipped and couldhave been dropped sometime around August 25. The reactors atHanford could produce enough Plutonium for three bombs every month,and by switching to a composite Plutonium/Uranium core beginning inNovember seven bombs could be made every month (these plans werealready in place by June). Even if we hadn't of dropped the atomic bomb, Hiroshima andNagasaki would still have been targets for attack. This is becauseHiroshima was a large industrial city that contained the 2ndJapanese Army Headquarters, which was in charge of all the defensesystems in Southern Japan; Hiroshima also had communication centersfor armies, storage points, and troop assemblies. Small industrialplants were also in the outskirts of the city. As for Nagasaki, itwas the largest fully operational sea port in Southern Japan, whichproduced ships, equipment, and relief supplies. He stated that he needed to end the war and collapse Japan's means to make war never again. (MORE)
To make Japan surrender Japan was not going to surrender and since many lives would be lostin a military push, the US decided to use the bomb to end thefighting as soon as possible.
The US leaders were hoping and praying the Japanese would finally surrender so they would not have to invade Japan. They were trying to prevent the deaths of millions of Japanese, Allied Force warriors including Russian Red Army soldiers. The Japanese Military was not willing to surrender. to def…eat japan quickly and save american lifes (MORE)
Against the Axis powers, of which Japan was part of. (The Bomb was dropped on Hiroshima and Nagasaki, Japan).\nThe emperor of Japan at the time was Hirohito, and Hitler was in control of Germany and Europe.
Yes, two atomic bombs were used on Japan. The first was released over Hiroshima on August 6, 1945 and the second was released three days later over Nagasaki. The bombs were dropped from B-29 bomber aircraft.
to end the war and cos japan dropped a bomb in the us on perl harbor,so that's th reason!
Hitler did not have the atomic bomb and anyhow Japan was on his side. I cannot believe someone could ask such a question. The United States used the atomic bomb against Japan after the Japanese attacked Pearl Harbor. They used one on Hiroshima on 8-6-1945 and used one on Nagasaki on 8-9-1945. Someo…ne really didnt pay attention to any basic history classes whatsoever. (MORE)
Another option was to wage a full scale naval invasion, which would have resulted in a LARGER number of deaths in Japan (since even the civilians were told that every man woman and child should fight to the death if invaded), and would have resulted in the deaths of many many allied soldiers.
Nobody was against it at the time....the Japanese were planning on fighting the allies till the last man...(in their entire country).. A reason against it would be that God does not want us to kill our enemies. The Bible says to love your enemies, not kill them.
Based on the information available to the US Gov't at the time? Yes. Because, to the best of the knowledge of the US Gov't and Military, Japan would never surrender and a full-scale invasion of the Japanese mainland would be the only way (other than the Manhatten Project) to end the war - which was …expected to cost more than 1 million lives. Base in the information that we know now? Nope. Japan was attempting to surrender, but their mistake was using Russia as the intermediary. The problem was that Russia wanted to conquer Japan, so it was in their interests to let the war drag on to weaken the Japanese military even more. As they say, hind-sight is 20/20. It is too easy to be a Monday-morning quarterback, and much to difficult to be the ones making the hard decision. But a decision needed to be made, and the right one was made based on the information and intelligence that was available to the decision-makers. (MORE)
to demonstrate U.S. power to the Soviet Union. President Truman stated that he needed to end the war and collapse Japan's means to make war ever again.
He wanted to end the war very quickly and have the unconditional surrender of Japan.
The atomic bomb was used to revenge Japan from a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941 (December 8 in Japan). Two atomic bombs were used on Japan. The first was released over H…iroshima on August 6 1945 (the first ever atomic bomb used) and the second was released three days later over Nagasaki. The bombs were dropped from B-29 bomber aircraft. The United States of America intended to bomb the capital of Japan, Tokyo, but due to the weather both the atomic bombs missed. (MORE)
The bomb would end the war as quickly as possible. the bomb was in preparation for a Japanese attack on the us.
Having found the [atomic] bomb we have used it. We have used it against those who attacked us without warning at Pearl Harbor, against those who have starved and beaten and executed American prisoners of war, against those who have abandoned all pretense of obeying international laws of warfare. We …have used it in order to shorten the agony of war, in order to save the lives of thousands and thousands of young Americans. -Harry Truman- (MORE)
President Truman had multiple reasons for ordering the nuclearstrikes on Nagasaki and Hiroshima. The primary reason was toquickly end the war through overwhelming force of these weaponsthus avoiding the need for potentially hundreds of thousands ofAmerican casualties from invasion into the Japanese …home islands. (MORE)
He and the Presidential Cabinet hoped it would prevent an invasion on the mainland of Japan by the Russians and Western Allied Forces. . He was really hoping to save millions of Japanese lives and the lives of the allied forces. . He prayed and hoped the Emperor Hirohito would surrender when he fi…gured out the US could annihilate his country. . Hirohito surrendered to save the throne and the Empire. He went against the Japanese Military leaders who would never surrender. (MORE)
End the war - motivate Japan to surrender . Prevent the invasion of Japan . Save millions of Russian, American and Japanese lives. . Prevent the Soviet Union Red Army from invading the mainland of Japan. . To Win the war.
His main goal was to use something extremely powerful to try and put a direct stop to the corruption built up by the communist nation. America was in World War Two against countries including Japan. Truman was trying to end the war.
President Harry Truman. Japan refused to surrender and the battles of Iwo Jima and Okiniwa had been blood baths with massive casualties on both sides. Atom bombs were dropped on Hirshoshima and Nagiskaki, and Japan surrendered soon after
It's not clear what kind of alternative universe history book you're reading, but in this universe Truman did use the atom bomb against Japan.
The use of atomic weapons against other human beings set a precedence that is in direct contradiction of the "Moral Imperative" .
The Manhattan project was initiated under Franklin D. Roosevelt but the final order was from Harry S. Truman.
In 1945 Japan was loosing the war. There was no need to use those bombs. The President wanted revenge and most of the people did too.
Your question asks for an opinion. In my opinion, yes, Truman was right. The Japanese civilian government was being controlled by the Japanese military, who was prepared to continue to fight (including one plan to bomb San Diego with bilogical weapons. Japan had refused demands to surrender, which w…ould have meant an invasion of Japan by conventional forces- which has been estimated to have cost over a million lives. Japan was at war with the US- a war they started- and refused to surrender. I agree. Einstein's letter to Roosevelt was highly influential in his decision to move forward with the project in the first place & Japan was working on the bomb. It only speeded up the end of the war not necessarily caused more damage than conventional weapons since 1 bomb was pretty much the equivalent of a weeks worth of bombing runs. It was also responsibly done which is why they were detonated above ground. (MORE)
Using the atomic bomb would ultimately save more American lives by making a full-scale land invasion unnecessary.
To bring about the quickest end to the war. But, you have to bearin mind that Japan, as the American and Allies got ever closer tothe main islands, were likely to fight to the last man, woman andchild. That was the nature of the Japanese people at the time. Eachisland the Americans reconquered from …the Japanese came at a greatloss of life in American and Japanese forces and civilians, alike.It was expected to be even worse on the the main islands. So, though using the two atomic bombs was horrible, it did forcethe Japanese Nation to cease hostilities and so brought the war toa halt. Let use hope that never again will any nation feel the needto use such a devastating weapon again. (MORE)
the us used atomic bombs against japan to end world war 2. the effects were the annihilation of hiroshima and Nagasaki. -edit- Most people agree that the bombs (two) were used to quickly end the war with Japan and save American lives. The effects were they ended the war and saved American lives. E…xactly what their purpose was. But, they had side-effects, or effects that were known, and predicted, but not necessarily wanted. In some cases, the side effects of the radiation were so bad that it, in itself, added to the purpose of the bombings coming about. Ending the war and saving many many lives that would have been lost in a long drawn out conventional war of guns and planes and ships etc. (MORE)
After Pearl Harbor, America was devastated. In an attempt to end the war, they used the atomic bomb against Japan. It worked.
inhuman ??????? but one fails to realize that if Japan had the Atomic bomb first, they would have used it inmass against the allies....... food for thought.
first answer: To intimidate the Soviets second correct answer: To force the Japanese to surrender, before the United States launched its planned invasion that would have caused massive casualties on both sides.
Saving American lives from a D Day II.
every one try win and destroying others.no matter it is nuclear or worst.caring about our people our solders not the enemy. freedom justice democratic all that mere words to find excuse for wars.domination over the world is the ultimate goal for all sides with all ways.
Invading it the conventional way would have cost many American lives, and the US decided it was better to just kill of a load of Japanese people instead.
Fat Man on the city of Hiroshima and Little Boy on Nagasaki. . You got that backwards..
He felt it was a better choce than having an estimated 1 million Allied soldiers die invading Japan.
Because the invasion of Japan would have been too costly in terms of human life, and the U.S wanted to see the power of the atomic bomb, that's why he dropped the bomb on a city that wasn't touched by previous bombing.
he did not want to see the mass deaths that would result and also he was working on a nuclear bomb that would be more effective.
President Harry S. Truman made the final decision to use the bombs on Japan. Before him, President Frankin D. Roosevelt decided to build and test the bombs.
yes, specifically nuclear fission . Well, yes. It was the weapon that ended World War 2 completely. We were just crazy enough to use the second most destructive weapon in ALL of human history.
The justification for using the atomic bomb was that it ended the war , or at least ended it sooner and thereby saved countless American-and Japanese-lives .
"Little Boy", the weapon delivered against Hiroshima by the B-29 Superfortress "Enola Gay", as well as "Fat Man" deliveredy by "Bock's Car" were deployed from North Field, a former WWII airfield on Tinian, an island that is a part of the Mariana Island chain in the northwest Pacific ocean. The B-29'…s combat range was only 3250 miles, so the weapons could not be delivered from the USA directly. Both bombers were members of the 393d Bombardment Squadron, Heavy, 509th Composite Group, which was, at the time, based out of Wendover Army Airfield in Utah -- far too distant from Japan for a direct delivery. (MORE)
The need to end the war and to collapse Japan's means to make war ever again.
It ended the war and collapsed Japan's means to make war or to rebuild the country. Japan can't do anything without the US approval.
There was no one specific event that caused Truman to decide to use the atomic bomb where, where without that event he would not have done so. . The US and Japan were at war and were treating each other in what we would now call a barbarous fashion. The invasion of Iwo Jima had been much more …difficult than expected and had resulted in extremely high US casualties. Military planners thought a conventional invasion of the Japanese Home Islands would result in over a million US casualties and lead to a protracted guerrilla war, with Japanese civilians fighting to the death, etc. That is the sort of calculation that lead to Truman agreeing to use the atomic bomb. (MORE)
An invasion of Japan was no longer necessary. *********** As the Americans fought from island to island, getting closer tothe main Japanese islands, taking many American casualties, it wasfelt that the American death rate on the main islands would betremendous. Not only would Americans pay dearly, b…ut the Japanesepeople were expected to fight to the bitter end. So, in a strangeway, though the two nuclear bombs caused much death and destructionover Hirosoma and Nagasake, it did force the Japanese Government tocapitulate. Obviously, the use of such a destructive force is onethat will be eternally discussed. Let's hope humans never have touse such a weapon in earnest again! (MORE)
Cycling-rod answered this question as shown below. Why hasCassandra given as being the answerer? As the American and Ally forces fought from island to island,getting ever closer to the main Japan island, the death rates (onboth sides) was enormous. It was expected to be even more so oninvading the …main island of Japan. Even the civilian population wasexpected to fight to the last man! On some islands, civilians choseto commit suicide rather than face the Americans. So strong wasJapanese propaganda that the American's were devils that would showno mercy to the civilian population. In order to reduce the deathrate and to bring Japan to a surrender, and so to end the war, twonuclear bombs were dropped. It had the desired result of causingJapan to surrender and so end the war. You have to understand thatonly in our modern day hindsight, is the full dreadful consequencesof nuclear weapons appreciated. Let us hope that never again willnuclear weapons be used. (MORE)
The use of the bombs was an attempt to force Japan to surrender, which they had not done despite the fire-bombing of all of their major cities. Many leaders in Japan were willing to fight on at any cost. The US had already planned an invasion of the home islands of Japan, but it would have meant the… deaths of thousands of US soldiers and millions of Japanese civilians. The war in the Pacific was raging on, killing thousands of allied soldiers and sailors a day, with the dug-in Japanese holding their ground despite having few supplies and little ammunition. The same tenacity was expected for the Operation Olympic invasion in late 1945. However, the advent of nuclear annihilation forced Emperor Hirohito and his government to end the war, as they had no defense against this new and terrible weapon. Other reasons for the use of the bombs included questions about their actual effects as a weapon, and the unknown side effects caused by radiation and fallout. Some have also suggested that the US was trying to intimidate the USSR, which did not have nuclear weapons at the time. (MORE)
They were used as both a 'test site, and a demonstration' of thepower of the new weapon.