Populist and nationalist forces are preparing a major offensive to overturn European politics. The stakes could not be higher.

An eleventh-hour deal on the UK’s withdrawal from the EU might be hammered out by the end of the year. But the risks are rising that it won’t.

Don’t place bets that a divided EU can successfully navigate a delicate balancing act between a disruptive Trump and an assertive China.

The Helsinki summit painfully underlined that the global order is under a frontal attack—and that the West is struggling to respond.

President Trump’s hectoring of NATO and Germany could prove counterproductive—or the opposite.

The 2018 NATO summit was more than the United States haranguing and bad mouthing its Europeans allies. It was about an attempt to reorder the transatlantic relationship.

The U.S. president has a very narrow view of American security policy—one that NATO does not necessarily fit into.

The possibility of a grand bargain emerging from the Helsinki summit is low. The Russian president will not be making concessions to his U.S. counterpart.

Military substance has proven to be more important than fiery speeches and digital rhetoric. Let’s see if this NATO summit will prove it.

A selection of experts answer a new question from Judy Dempsey on the foreign and security policy challenges shaping Europe’s role in the world.