Ayman al-Zawahiri, the leader of Al Qaeda, was killed by a U.S. drone strike in Kabul, Afghanistan over the weekend. For years, al-Zawahiri was Osama Bin Laden's deputy — and was known as the mastermind behind the 9-11 attacks. NPR's Greg Myre and Diaa Hadid discuss the implications of al-Zawahiri's death for the U.S., Afghanistan, and America's decades-long war on terror.This episode also features reporting from NPR's Steve Inskeep.In participating regions, you'll also hear a local news segment to help you make sense of what's going on in your community.Email us at considerthis@npr.org.