U.K. Prime Minister Keir Starmer is traveling to Washington to convince NATO-skeptic Trump to “backstop” a European peacekeeping force in the event of a deal to end the war in Ukraine. Starmer’s trip comes at a low point in transatlantic relations.

While meeting with British Prime Minister Keir Starmer, Trump said he backed a key provision of the NATO alliance that requires members to come to the defense of another if attacked.

Moscow’s demand during Riyadh talks rejected but allies fear Donald Trump could yet allow restoration of former Soviet bloc

The Ukrainian president's comments to Laura Kuenssberg came after he failed to sign the deal at the White House on Friday.

Iowa’s two U.S. senators both praised Matt Whitaker as President Donald Trump’s pick as the ambassador to NATO.

Elon Musk, who holds no official cabinet position in the administration, wrote on social media that he agrees the United States should leave NATO and the United Nations. On Saturday, Musk quote-tweeted “I agree” to a post from someone who wrote,

President Donald Trump on Sunday amended two executive orders to exempt imports valued at less than $800 from Canada and Mexico.

Victoria Coates, former deputy national security adviser during the first Trump administration, wonders if NATO allies aren't falling short of U.S. expectations as President Trump seemingly embraces Russia.

Former National Security Advisor Michael Flynn called NATO "a thing of the past" and suggested the United States should walk away from the military alliance as President Trump pulls Russian President Vladimir Putin closer.

How is foreign policy changing under President Donald Trump? Kurt Volker, former U.S. ambassador to NATO, provides insight.