Only nine countries in the world currently possess nuclear weapons—but how did we get here? From the first atomic bomb in 1945 to secret programs and shocking disarmaments, this 1-minute video breaks ...

Nine countries in the world possess a total of 12,241 nuclear weapons. Russia and the United States have the most, with 180 and 170, respectively, while India has 180 and Pakistan has 170. Of these, 2 ...

Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

President Donald Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to the bomb, but come as Washington's ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one.