John Oliver explains North Korea, that other giant crisis you forgot about

With this weekend's news cycle understandably absorbed with the events in Charlottesville, it's easy to forget that a game of nuclear brinksmanship between a pair of stubborn leaders is accelerating rapidly towards the use of nuclear weapons.Luckily, late-night comedians are here to remind us about the impending fall of civilization. John Oliver's Last Week Tonight dedicated its main topic to North Korea this week, and answers some surprisingly basic questions: what's going on, how did