china
Most countries have zero nuclear weapons.
England tested its nuclear bombs at maralinga and woomera in south Australia
America
Never, at least not yet.
Today, if any country decided to send a missile over to our country, we would know via satellite that they had fired (in a matter of mere seconds). By knowing they are sending a nuclear bomb to our country, we would fire one them. This would mean a nuclear fallout; our bombs are at least thirty times stronger than the bombs released at Hiroshima and Nagasaki in 1945. This keeps any country from using nuclear weapons on each other for fear of nuclear fallout.
The US is the only country to have used nuclear bombs in war: 2 to convince Japan to end WW2 before we would have begun the scheduled invasion.
Those were the only nuclear bombs used in the war. Any nuclear detonation after that - by any country - was only for testing.
Japan.
roosevelt high school
The United States used nuclear bombs on Japan in world war two.
Some bombs are nuclear. But most bombs are not nuclear.
No truly poor country has nuclear weapons (with the possible exception of North Korea).