U.S. President Trump's special envoy Steve Witkoff and son-in-law Jared Kushner visited Oak Ridge National Laboratory in Tennessee to consult with nuclear experts ahead of potential negotiations with Iran over its nuclear weapons program.

Ukrainian President Volodymyr Zelensky said he held a positive conversation with US envoys Steve Witkoff and Jared Kushner on Monday, signalling renewed efforts to advance diplomacy over the war with Russia. The call came as European leaders backed a proposed meeting between Zelensky and Vladimir Putin to seek a ceasefire.