U.S. Secretary of State Marco Rubio and Ukraine Secretary of National Security and Defence Council Rustem Umerov shake hands after a meeting in Hallandale Beach, Fla., on Sunday. (Eva Marie Uzcategui/Reuters)
U.S. Secretary of State Marco Rubio and Ukraine chief negotiator Rustem Umerov said talks on a proposal to end the Ukraine war were "very productive," but "much work remains."Rubio, special envoy Steve Witkoff and U.S. President Donald Trump's son-in-law Jared Kushner met with a Ukrainian delegation in Florida. Umerov is now leading the talks for Kyiv after Andriy Yermak, President Volodymyr Zelenskyy's chief of staff, resigned on Friday.The deal, drafted without Ukraine or its European allies, would require Ukraine to give up territory, shrink the size of its army and agree to not pursue membership of NATO.