The number of UN peacekeeping forces around the world has peaked in recent months after falling off in the late 1990s, following a period of trial and error for UN interventions.
Although Europe is struggling to manage the hundreds of thousands of refugees fleeing conflicts in the Middle East, Africa and elsewhere, the countries facing the biggest refugee impacts are the ones closest to the fighting.
A dozen years after 9/11 and the start of the war in Afghanistan, the public has mixed opinions about whether certain policies have made the U.S. safer from terrorism.
In his address Thursday on U.S. counterterrorism policy, President Obama defended the use of drones, which has the support of the U.S. public but is strongly opposed abroad.