North Korean hackers steal billions in cryptocurrency. How do they turn it into real cash?

For Pyongyang’s hackers, the heist is the easy part. But actually getting their hands on the money is a different story. "Doing that requires moving the stolen cryptocurrency, laundering it so no one can trace it, and then exchanging it for dollars, euros, or yuan that can buy the weapons, luxuries, and necessities even bitcoins cannot." Patrick Howell O'Neill investigates.