Iran's Assassins | Sunday on 60 Minutes

While Iran’s backing of Hamas in Gaza and Hezbollah in Lebanon is widely known, the regime is quietly carrying out a shadow war in the U.S. and Europe, deploying proxy assassins to silence or eliminate critics of the regime. Lesley Stahl meets some of the targets, including Iranian-American activist Masih Alinejad and former White House National Security Adviser John Bolton.