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.

Donald Trump has claimed the UK is 'out of line' as he threatened the EU with tariffs - sparking fears of a fracture between the NATO alliance at a crucial moment

PM says choosing between Brussels or Washington is not ‘either/or’ question in wake of US threat to impose tariffs on EU