Introduction Currently, eight countries have nuclear weapons:United States
United Kingdom
Russia
France
and China– these are the five official nuclear weapons states – they signed the Non-Proliferation Treaty (NPT),
India
Pakistan
and Israel who are unofficial nuclear weapons states because they have not signed the NPT and their nuclear programmes are not recognised in the NPT.
These countries have carried out nuclear tests all around the world since 1945, but nuclear weapons have only been used twice in war: in 1945, the US used two nuclear bombs against Japan. One was dropped on Hiroshima on the 6th of August, the other one destroyed Nagasaki three days later.
What is a nuclear bomb and how does it work? >> |
