Nuclear arms are powerful weapons that use nuclear reactions to create massive explosions. These weapons can cause widespread destruction and loss of life, making them some of the most dangerous tools in warfare. Countries that possess nuclear arms often have them as a deterrent, meaning they hope to prevent conflict by showing they have the capability to respond with great force. The development and stockpiling of nuclear arms have led to international treaties, like the Nuclear Non-Proliferation Treaty, aimed at preventing the spread of these weapons. Nations like the United States and Russia have large arsenals, which raises concerns about global security and the potential for nuclear conflict.