The Nato chief said Nato countries' pledge to spend 5% of GDP on defence is Donald Trump's "biggest foreign policy success".

Europe still wants and needs to work with Trump. But this year's made it clear they're increasingly on their own.

America’s new vision of its place in the world has left its European allies wondering whether Nato can survive in its current form.

President Donald Trump’s new National Security Strategy, released Dec. 4, largely charts a needed correction for the United States on military and foreign policy.

NATO Secretary General Mark Rutte, the former Dutch prime minister, referred to Trump as "daddy" during the alliance's annual summit in June. But Trump's own administration has also called him "daddy" in recent months, raising questions about the origins of the president's nickname.