Europe should welcome rather than rebuff U.S. President Donald Trump's call for other NATO members to ramp up their military spending, Polish Prime Minister Donald Tusk said on Wednesday, stressing the importance of security to the continent.

The EU's top diplomat and Poland's prime minister said Wednesday that the bloc must heed US President Donald Trump's demand to spend much more on defence -- faced with the "existential threat" posed by Russia.

EU leaders highlight the urgency to boost defence spending in response to Russia's growing threat. EU foreign policy chief Kaja Kallas and Polish PM Donald Trump stress the need to heed US President Trump's call for increased military budgets and to support Ukraine against Russian aggression.