Davos, Jan. 20 -- California Governor Gavin Newsom criticised US President Donald Trump and urged European leaders to remain united, ahead of Trump's address at the World Economic Forum (WEF) in Davos.

Addressing the media in Davos, Newsom referred to Trump's approach towards Europe and told Europeans "they've been played" by Trump. He said Europeans "need to stand tall, stand firm, stand united!"

Calling Trump's approach unacceptable, Newsom said, "This is not diplomacy, it's stupidity!"

Trump is scheduled to speak at the World Economic Forum in Davos on Wednesday.

Newsom's remarks come as Trump, in recent days, has drawn sharp attention in Europe over his comments and moves linked to Greenland, which he has described as central to U...