That one time in 1995 when Russia almost nuked the United States
Russia almost blew the United States away with a nuclear strike in 1995 after mistakenly thinking it was under attack. If it weren't for Russia's then-president Boris Yeltsin, America as we know it wouldn't exist. Under the "launch-on-warning" policy used by both nations, Russia had 30 minutes to decide to nuke us but Yeltsin only had five.
Here's how this monumental mistake almost took place: