Donald Trump’s election to President of the US in November 2016 might well become one of the most momentous events in the relationship between Europe and North America since the end of the Cold War.

Although this relationship has already gone through substantial changes in the last 25 years, the current challenges seem more formidable than many of the past crises.

External threats to Europe and, to a lesser extent, America are intensifying. Rather than unifying the West, these challenges have provoked internal divisions within the transatlantic community that are greater than ever before.