Trump's UK visit lands AI, pharma and nuclear pledges

A supporters of US President Donald Trump poses for a photograph outside Windsor Castle, in Windsor, on September 17, 2025, during US President Donald Trump's second State Visit to the UK. US President Donald Trump arrived in Britain on Tuesday for an unprecedented second state visit, with the UK government rolling out a royal red carpet welcome to win over the mercurial leader. (Photo by Paul ELLIS / AFP)