Islamic State flags on the Mullah Abdullah bridge in southern Kirkuk earlier this week. A U.N. report says the extremist group has perpetrated possible war crimes and crimes against humanity. Reuters/Landov hide caption

itoggle caption Reuters/Landov

Former Liberian President Charles Taylor waits for the start of his appeal judgment at the Special Court for Sierra Leone in Leidschendam, near The Hague, Netherlands, on Thursday. Koen van Weel/Associated Press hide caption

itoggle caption Koen van Weel/Associated Press