The atomic bombs killed hundreds of thousands of people and ended World War II.
Daniel Ellsberg says nuclear war with North Korea would wipe out South Korea and Possibly L.A. or San Francisco.
The new simulation will help emergency managers plan their response to a potential nuclear attack.
"What do we need a world for if there is no Russia in it?" Putin quipped.
If he survives the initial blow, the president can enter a bunker and lead the nation from there.
At this time last year, they said it was two and a half minutes to midnight.
The secret was in its tiny ear bones, the size of half a grain of rice.
Hosted between a handful of NATO allies, U.S. nuclear arms in Europe have been in place for decades.
Thirty years after Gorbachev and Reagan signed a landmark deal to stop an arms race in Europe, the pact was on the fritz.
Three different reports from Russian state media claim that the rail-based missile system will not be a budget priority for the foreseeable future.
Hawaii is preparing for the possibility of a nuclear attack from North Korea, testing out emergency sirens for the first time in decades.
"The country has steadfastly improved its nuclear and missiles capability," Defense Minister Itsunori Odonera said.
Analysts say North Korea may have to move on to other tunnel testing sites or build new ones.
"It's probably closer to midnight...than any time it's been since the Cuban missile crisis," Scarborough said.
Pyongyang carried out its sixth and most powerful nuclear test on Sunday, causing a 6.3 magnitude earthquake.
The B61-12 is planned to be the first U.S. precision-guided atomic bomb and is intended to minimize collateral damage.
The Department of Defense uses a decades-old nuclear system, according to a 2016 report by the Government Accountability Office.
President Donald Trump has sent a Naval strike group toward the Korean Peninsula as the threat of a North Korean nuclear test looms.
A California laboratory has begun releasing never-before-seen footage of nuclear weapons tests previously hidden by the U.S. government.
The “clock” is now at two and a half minutes to midnight, 30 seconds closer than in 2016.