The European Union has navigated a thicket of external and internal crises in recent years, including mass migration and Brexit. What are the union’s core institutions, and what roles do they play?

The International Criminal Court was created to bring justice to the world’s worst war criminals, but debate over the court still rages.

Trade between the world’s two biggest economies has ballooned in recent decades, bringing significant benefits but also perils that have led to calls to rethink the relationship.

As Europe has weathered a succession of economic crises, the European Central Bank has responded with an aggressive set of monetary policies that have redefined the bank’s original mandate.

The most recent crisis in Ukraine has invited closer scrutiny of the European Union’s approach to its Eastern neighbors.