When have nukes been used?

Nuclear weapons have been used in combat twice during World War II when the United States dropped atomic bombs on the Japanese cities of Hiroshima on August 6, 1945, and Nagasaki on August 9, 1945. These bombings led to Japan's surrender and the end of the war. Since then, nuclear weapons have not been used in conflict, although they have played a significant role in military strategy and deterrence during the Cold War and beyond.