As French airstrikes hit Islamic State militants Sunday, former CIA Director James Woolsey argues why the U.S. and its allies need to take more forceful action against ISIS.
ISIS has now claimed responsibility for major terror attacks in France, Egypt and Lebanon. This could galvanize its enemies to take stronger action against the extremist group, some analysts say.
The possibility that a bomb caused the mid-air disintegration of a Russian airliner has officials worried about airport security. Workers in the U.S. undergo background checks, but gaps remain.
Audrey Kurth Cronin, director of George Mason University's international security program, discusses the attacks in Paris, ISIS' apparent responsibility — and what it means for the group's strategy.
As their hometown is freed from ISIS, Yazidis remain wary of returning and of their future in Iraq. Thousands of their men and women are still missing or were killed by the extremist group.
NPR's Kelly McEvers talks to Jessica Lewis McFate, research director at the Institute for the Study of War, about what needs to be done after ISIS is kicked out of a city to keep it from coming back.