Nuclear war refers to a conflict in which countries use nuclear weapons against each other. These weapons release massive amounts of energy through nuclear reactions, resulting in devastating explosions and widespread destruction. The effects of a nuclear war can lead to significant loss of life, long-term environmental damage, and severe health issues for survivors.
The threat of nuclear war has been a concern since the development of nuclear weapons during World War II, particularly with the bombings of Hiroshima and Nagasaki. Efforts to prevent nuclear war include international treaties, such as the Nuclear Non-Proliferation Treaty, aimed at reducing the number of nuclear weapons and promoting peaceful uses of nuclear energy.