អាជ្ញាធរជាតិអាវុធគីមី

Nuclear Weapon Of the three types of WMD’s, nuclear weapons represent the greatest threat. ​The first test of a fission (“atomic”) bomb released an amount of energy approximately equal to 20,000 tons of TNT. The first thermonuclear (“hydrogen”) bomb test released energy approximately equal to 10 million tons of TNT. Nuclear weapons have been used twice in war, both times by the United States against Japan near the end of World War II. On August 6, 1945, the U.S. Army Air Forces detonated a uraniumgun-type fission bomb over the Japanese city of Hiroshima; three days later, on August 9  the U.S, Army Air Forces detonated a plutonium implosion-type fission bomb over the Japanese city of Nagasaki.  “Atomic Power for War and Peace”. Popular Mechanics. October 1945. pp. 18–19

There are about 14,500 nuclear weapons in the world. Nine nations are members of the world’s nuke club, but The U.S. and Russia own the majority of the world’s nuclear weapons. Here are the countries that have them:

North Korea

• Total nuclear weapons: ~10 to 20
• Total nuclear tests: ~6
• First tested: October 2006
• Most recent test: September 2017

Israel

• Total nuclear weapons: ~80
• Total nuclear tests: 0
• First tested: No confirmed tests
• Most recent test: No confirmed tests

India

• Total nuclear weapons: ~120 to 130
• Total nuclear tests: ~3
• First tested: May 1974
• Most recent test: May 1998

Pakistan

  Total nuclear weapons: ~130 to 140

  Total nuclear tests: ~2

  First tested: May 1998

  Most recent test: May 1998

United Kingdom

• Total nuclear weapons: ~215
• Total nuclear tests: ~45
• First tested: October 1952
• Most recent test: November 1991

China

• Total nuclear weapons: ~270
• Total nuclear tests: ~45
• First tested: October 1964
• Most recent test: July 1996

France

• Total nuclear weapons: ~300
• Total nuclear tests: ~210
• First tested: February 1960
• Most recent test: January 1996

United States

• Total nuclear weapons: ~ 6,550
• Total nuclear tests: ~ 1,030
• First tested: July 1945
• Most recent test: September 1992

Russia

• Total nuclear weapons: ~6,800
• Total nuclear tests: ~ 715
• First tested: August 1949
• Most recent test: October 1990

CNBC Published March 16, 2018