European leaders rallied around Volodymyr Zelensky after the exchange with Donald Trump and JD Vance. But arming Ukraine without U.S. help would be a struggle.

Key Republicans and Democrats in Congress have been stalwart supporters of Ukrainian President Volodymyr Zelenskyy, but the blowup between the Ukrainian leader and President Donald Trump is threatening to change that.

Prime Minister Sir Keir Starmer has spoken to US President Donald Trump and Ukrainian President Volodymyr Zelensky after a meeting between the two leaders in Washington descended into a row about US support for Ukraine.