Some 244 million people worldwide have left their countries of birth – many seeking improved economic opportunities or fleeing physical danger – but the impact of out-migration has been uneven worldwide.
Pew Research Center President Michael Dimock examines the changes – some profound, some subtle – that the U.S. experienced during Barack Obama’s presidency.
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.