President Donald Trump's press conference with German Chancellor Angela Merkel following the pair's meeting was largely positive, but there was one thing Trump didn't address that could be a problem, according to Nick Burns, former U.S. ambassador to NATO.
"If you were listening for U.S. support for the EU, you didn't hear it from President Trump. Europeans are worried about that," Burns said in an interview with "Power Lunch" on Friday.
"He's the first American president since Truman to be so negative about the project of building European unity. That's a problem."
"I reiterated to Chancellor Merkel our strong support for NATO, as well as the need for our NATO allies to pay their fair share for the cost of defense," Trump said at a joint White House press conference following the meeting.
Merkel said she was "gratified to know" how "important" Trump feels NATO is.