At the present time no country is "threatening nuclear war". A balance of power has existed for the past 60 some years.
Because the USSR had nuclear bombs that they were threatening to use on the Americans.
as you have been getting that message are they the same questions asked well no. you see they ask for countries, and this asks for just were there nuclear weapons? No there was not any nuclear weapons just threatening
Sanctions and disapproval of North Korea's attempt to build nuclear bombs is the reason that they was threatening war with other countries. As of July 24, 2013, the current state of things seems to be calmer because that country and the others.
Some of the countries have nuclear weapons because they use them as a defense mechanism. The nuclear weapons are intended to be used whenever there is a war.
A war where countries fight each other with nuclear weapons.
MAD (Mutually Assured Destruction)
The only country to ever use nuclear weapons in war is the United States with the two bombs they dropped on Japan. No other country has ever actually used a nuclear weapon.
MAD- Mutually Assured Destruction with the use of nuclear weapons to wipe out two superpower countries, US and the USSR
War in which the combatants use nuclear weapons.
South Korea is not threatening anyone with nuclear weapons; it is North Korea that is doing the threatening. The motive behind the North's activities is to press for humanitarian aid using the threat of nuclear war as incentive for the West to provide this aid (like a ransom).
Not very likely countries as are now getting rid of their nuclear weapons to aviod a nuclear war
Only the USA