The 80th anniversary of the atomic bombing of Hiroshima and Nagasaki is this week. It was the only time nuclear warheads were used during war. Here’s a look at the history and current U.S. stockpile.

Add Yahoo as a preferred source to see more of our stories on Google. Eighty years after the US dropped an atomic bomb on Hiroshima, the city has transformed. The bombing immediately killed 80,000 ...

A minute of silence was observed Saturday in Nagasaki, precisely at the time of the atomic bomb explosion dropped by a US bomber on the Japanese city 80 years ago, while the restored bell tower of the ...