Nuclear Weapons

Well the government officials of japan were completely blown away, The radiation in hirojima and nagasaki was killing people, japan immediatly surrendered to America, soon after American troops started to rebuild the areas.

Japan doesn't want any nuclear weapons.
But Japan can easily produce nuclear weapons if it wanted to. It has the technology to build nuclear weapons within 1 year-- probably a few months if it wanted.

However, most Japanese people are against nuclear weapons. Therefore, they do not have nuclear weapons.

Canada does not possess any weapons of mass destruction and has signed treaties repudiating possession of them. Canada ratified the Geneva Protocol in 1930 and the Nuclear Non-proliferation Treaty in 1970.

Both have critical mass and both use chain reactions

The Swedish Armed Forces is made up of an army, an air force, a navy, a home guard, and a signals intelligence service. In 2012, the country's military budget was 6.46 billion dollars.

A magnitude 8 earthquake releases approximately the same energy as a 15 megaton nuclear explosion (e.g. Castle Bravo test in 1954). This is the same as fifteen 1 megaton nuclear explosions.

Note: the photo above is of a 0.5 megaton nuclear explosion.

That will vary dramatically with the design of the bomb and whether it is an airburst or a surface burst.

No.

If such a device could be made, it would be a lot more powerful than a nuke of similar size, as ALL the mass of the antimatter and neutralising matter would be anhialated and turned to energy, instead of a small fraction of total mass of uranium, plutonium etc.

Currently not a real threat to the world as antimatter is extremely expensive to produce and the total amount manufactured to date would only power a 60 watt light bulb for a few hours, and cost $ billions to produce.

Ds1ao: with on gram of antimatter you can make a 43 kiloton bomb (more than three times as powerful as the bomb dropped on Hiroshima

That would depend on the bomb(s). FEMA estimates that in a reasonably anticipated nuclear missile exchange fallout from missiles attacking our silos in Montana could have a lethal plume extending as far east as Ohio. And that is only considering attacks on Montana. Missiles will undoubtedly attack in all states. You can check FEMA's website for the complete fallout projections map.

The first atomic bomb was launched in 1945, by the US.

It incinerated Hiroshima and Nagasaki, Japan during WWII

The above is half true. That was the first time an atomic bomb was used in war, but the first atomic bomb was detonated at the the Trinity Site in White Sands Missile Range, on July 16, 1945.

The US has not stopped. There was a pause following the signing of the START treaty to allow stockpile reductions, but the US is now beginning a cycle of replacement of everything still in the stockpile with brand new designs of nuclear weapons. The stockpile size will continue to reduce to meet the START limits, but eventually this will all be newly made and the old ones fully retired.

There were two planes which dropped the weapons. The Enola Gay is a Boeing B-29 Superfortress bomber, named for Enola Gay Tibbets, the mother of the pilot, Colonel Paul Tibbets, who selected the aircraft while it was still on the assembly line. On 6 August 1945, during the final stages of World War II, it became the first aircraft to drop an atomic bomb. The bomb, code-named "Little Boy", was targeted at the city ofHiroshima, Japan, and caused unprecedented destruction. And the Bockscar, sometimes called Bock's Car, is the name of the United States Army Air Forces B-29 bomber that dropped a Fat Man nuclear weapon over the Japanese city of Nagasaki during World War II in the second - and last - nuclear attack in history.

The U.S developed nuclear weapons to scare the Japanese and end world war 2 for the Americans

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Wrong!

Actually the U.S. developed nuclear weapons in WW2 in an arms race with the supposed Nazi Germany project to do the same. Unknown to us, the German project soon stalled and concentrated on reactors not bombs. When Germany surrendered in spring 1945 the U.S. project continued as it was so close to finishing. In August the only 2 nuclear bombs used in war were dropped on Japan, prompting their surrender and ending the war.

They were developed to defend against a possible German threat but got used against Japan to end the war.

After the war, development slowed but was prompted by fears of the expansion of Soviet Communism. Development accelerated again after the USSR's 1949 test of their first nuclear bomb, causing an extended arms race.

you mean a-bomb. no one has ever h-bombed anyone else. The dropping of the a-bomb was so important because a) it won the pacific for us in WWII, and b) it was such a tragedy

If you consider the total cost of the Manhattan Project ($2,000,000,000) and divide that over the 4 atomic bombs built over WW2 (Trinity, Little Boy, Fatman, and one finished about the time Japan surrendered and thus not used); each bomb cost $500 million. However as most of the expenses on the Manhattan Project was for infrastructure (e.g. enrichment plants, reactors, plutonium reprocessing plants) that could be used to make more bombs, actual production and delivery costs for Little Boy was much less: probably well under $1 million.

A naval blockade of the island of Cuba (or Cuber as Kennedy used to pronounce it).

Here's "some" German weapons: Mauser Gewehr 98, Mauser Kar98AZ, 1915 Stick Grenade, 1915 Discuss Grenade, Mondragon Model 1915, Mauser Panzergewehr 1918, P-08 Luger, Mauser C96 Broomhandle, MG-08, MG-08/15, 1915 Model Two Man Flamethrower, Flammenwerfer 1916, and Bergmann MP-18/1. In addition to these were sabers, trench clubs, cavelry lances, and other hand to hand weapons. As for chemical warfare, the most common chemical agents used were: mustard agents (H agents), Phosgene (CG agent), and Hydrogen Cyanide (AC agent).

It made the people edgy. Many of the youngers in the 50s and 60's and 70's... all they heard of was WW3 talk. We grew up never knowing if some incident would trigger the war. We never knew enough about what was going on, because we werent told enough. We werent told enough because intelligence services cut the public out of the loop and said nothing much at all about the cold war and as a result the people mostly lived in the dark; and that's where Satan lives and that's from where he spreads his fear. US intelligence services became psychotic about secrecy. There was little caring communication from groups like the CIA so the kids became wilder and sought relief from fear in drugs, alcohol and music. Yet...through it all God kept the balance of power and the bombs never went off.

tsar bomba was the most destructive ever tested

A 1 Megaton (million ton) nuclear warhead has the destructive power of 1 million tons of TNT.

The measurement comes from the use of TNT's explosive power in quantity. The Trinity test site at Alamogordo, New Mexico, prior to the first nuclear test, was calibrated using TNT prior to the main test.