After three years spent trying to deter Russia from destroying Ukraine, European Union leaders grappled on Monday with how to respond to a major ally who appears determined to start a trade war or even seize part of their territory.

European Union leaders gather on Monday to discuss how to bolster the continent's defences against Russia and how to handle U.S. President Donald Trump after his decision to impose tariffs on goods from Canada,

"There are no winners in trade wars. If … the U.S. starts a trade war, then the one laughing on the side is China," said the EU's foreign policy chief.

Keir Starmer on Monday became the first British prime minister to attend an EU leaders' summit on defence and security since Brexit.

Starmer arrives at NATO's HQ ahead of talks

Keir Starmer is heading to Brussels, becoming the first British prime minster to attend a European Union leaders’ meeting since the U.K. left the bloc five years ago

Strengthening Britain's relations with Germany was the focus of a meeting between German Chancellor Olaf Scholz and British Prime Minister Keir Starmer on Sunday. Scholz met with Starmer at the Chequers country estate outside of London.

British Prime Minister Keir Starmer on Monday joined European Union leaders in Brussels for talks on strengthening cooperation on defence five years after the UK left the bloc. Rejoining the EU was out of question but "I do think that we can have a better,