Here’s how different health-care systems, including single-payer and government-run, have contended with the coronavirus.

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.

Brexit supporters argue that the EU threatens sovereignty and stifles growth, while opponents counter that EU membership strengthens trade, investment, and the UK’s standing in the world.

Once locked in war, Vietnam and the United States have built mature ties rooted in mutual economic and security interests.