The era of America’s “security guarantee” for Europe is over, a German lawmaker and former military officer said.

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 as "daddy" in recent months, raising questions about the origins of the president's nickname.

Some NATO members could soon become “majority non-European” which could raise questions about their future loyalty to Washington, according to the U.S. National Security Strategy which outlines President Donald Trump’s foreign policy priorities.

President Trump is doubling down on his criticism of Europe as European leaders push back on his new security strategy.

During Trump’s first term, the US removed NATO ally Turkey from the next-generation fighter program after Turkey purchased an air defense system from Russia.

The diplomat questioned whether Europe would be a dynamic economy or just somewhere Americans visit for lovely wines, cheeses and beers