Keir Starmer has urged world leaders to “double down” in their efforts to support Ukraine during a visit to Poland, days before Donald Trump’s return to the US presidency risks jeopardising international solidarity on the issue. Speaking alongside the Polish prime minister, Donald Tusk, after the pair discussed a proposed defence-focused treaty, Starmer dodged questions on the possible impact of Trump, but insisted the only way forward was “peace on Ukraine’s terms”. He also faced a sightly awkward moment as Tusk, who was president of the European Council for much of the Brexit period, said it was “a dream of