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.

The EU's top diplomat Kaja Kallas said Russia is a problem "for all of us," while adding that Trump is "right" on European defense spending. Poland's Donald Tusk said "if Europe is to survive, it needs to be armed.

The EU's top diplomat Kaja Kallas said Wednesday that the bloc must heed US President Donald Trump's demand to spend more on defence, as she issued a stark warning over

U.S. President Donald Trump has promised to address a longstanding trade deficit with the European Union, saying he will reverse that by imposing tariffs or making the EU buy more U.S. oil and gas. In an "America First Trade Policy" memo issued on his first day back in the White House on Monday,