Congress passed legislation that a president cannot unilaterally withdraw from NATO, setting up a major legal fight if Trump tries to pull the US out.

President also plans to ask for "financial contribution" for maintenance of remaining troops, European diplomatic source said.

The details are more complicated. FILE – President Donald Trump speaks during the NATO summit, Dec. 4, 2019, in Watford, England. (AP Photo/ Evan Vucci, File) He pledges expansion of the military, promises to protect Pentagon spending from austerity ...

A number of major economies within NATO have still not reached a 2014 target for member states to spend at least 2% of GDP on defense. As U.S. President Donald Trump looks to immediately fix his ...

It is now a weapon being used against us.” Trump’s skepticism about U.S. support for Ukraine and Taiwan, his eagerness to impose tariffs, and his threats to retake the Panama Canal, absorb Canada, and acquire Greenland make it clear that he envisions a return to nineteenth-century power politics and spheres of interest,

President Donald Trump's economic warfare and "respect equals fear" philosophy will be key tenets of his administration's foreign policy approach as he begins his second term in the White House.

Relations between presidents and prime ministers aren’t always easy, even without Elon Musk weighing in with his views.

Standing up for one’s interests is a long way from opening hostilities against friends. How does any of this help Americans? It doesn’t

The content of the conversation has yet to be revealed but London will be hoping to retain a special relationship with Washington.