President Donald Trump opened up a meeting with European leaders by gushing about his political frenemy Emmanuel Macron of France.

Trump lauded Macron, who was seated to his right, on a day when he met with European leaders as well as Ukrainian president Vladimir Zelensky in an effort to try to bring the brutal war in Ukraine to an end.

'Everyone knows President Macron of France,' Trump said while going around a table in the East Room of the White House and providing generous introductions of European leaders who raced to Washington to buttress Zelensky in negotiations.

Trump called Macron 'someone who's been with me from the beginning.' He called him 'one of the first people I met as a foreign dignitary' and said he 'liked him from Day One.'

'I like him even more now – that's pretty good. That's unusual,' Trump said, underlining for effect, 'That's a pretty unusual thing.'