This is impossible to predict as we don't know the future situation.
America
They used nuclear and atomic bombs.
Hydrogen bombs use the same process of nuclear fusionthat powers the Sun.
Nuclear bombs can use either nuclear fission or nuclear fusion as the primary mechanism of energy release. Most nuclear bombs in current arsenals rely on nuclear fission reactions, while thermonuclear bombs use a fission reaction to trigger a fusion reaction.
The U.S. use nuclear bombs during World War ll to bomb Hiroshima and Nagasaki after Japan refused to surrender.
In World War 2 the Nuclear bombs were Uranium and Plutonium. Nowadays they use Hydrogen.
The United States of America, when they dropped bombs on Hiroshima and Nagasaki in August 1945.
I believe no one should use nuclear weapons.
Some do. Others use Uranium.
Two
none
nuclear bombs