“When the president refers to the EU as an enemy of the United States, that’s a gift" to Russia and China, said retired Lt. Gen. Ben Hodges.
The president raised the possibility of a U.S. withdrawal from the alliance “several times” in 2018, senior administration officials told the New York Times.
The American president badmouths the French president on the eve of a commemoration of World War I's end.
The desire for a referendum stems from a dispute with Greece, which has a province with the same name.
Trump was supposed to be talking about trade, but instead seemed stuck on the universal criticism of his Russia summit.
"They may get aggressive, and congratulations, you’re in World War III," Trump told Fox News' Tucker Carlson when asked about defending Montenegro.
From nuclear security to cybersecurity, abandoning NATO would make the U.S. more vulnerable to attack.
Trump's antics abroad illustrate why he's on the ropes politically.
At an unscheduled press briefing, President Trump took credit for fixing a crisis with his allies that he created.
The president may have been overstating his victory.
Before heading out to a "very important NATO meeting" in Brussels, the president taunted his attorney general on Twitter.
The long conflict in Afghanistan is at the top of Thursday's agenda at the NATO summit in Brussels.
Chief of staff was "displeased" because there was "only pastries and cheese" for breakfast, Sarah Huckabee Sanders said.
The Democratic lawmaker spelled it out for the president.
The Fox News host says the president’s remarks in Brussels could cause lasting damage.
Trump slammed Germany over a gas pipeline deal with Russia.
CNN anchor schools the president on NATO, Europe and Russia.
Trump gets a public "Dear America" message ahead of the NATO summit.