Overview:The European Union has been beset by a series of comings and goings over the last few years, each triggering its own brand of crisis. The civil war in Syria created the biggest wave of refugees to hit Europe since World War II, sparking contested debates on how to divvy up tens of thousands of refugees across E.U. countries. Meanwhile, in the U.K., Britain's vote in favor of Brexit added to the turmoil. Go behind the scenes with firsthand accounts of Europe's tumultuous last decade and its impact around the globe.