The world has been rocked by three separate Islamic State attacks on three different continents this week.
In Tunisia, 38 people were killed when a gunman opened fire on tourists. In Kuwait, a suicide bomber at a Shiite mosque killed at least 27 people during prayers. And in France, police say a man attacked a gas factory in Lyon, and they found a decapitated head hung on a fence alongside flags containing Arabic writing.
Lina Khatib is the director of the Carnegie Middle East Center, and she says more attacks can be expected.