Ukrainian negotiators at talks scheduled for June 2 in Istanbul will present to the Russian side a proposed roadmap for reaching a lasting peace settlement, according to a copy of the document seen by Reuters.

By making harsh, uncompromising demands in peace talks with Ukraine while continuing to pummel it with waves of missiles and drones, Russian President Vladimir Putin is sending a clear message: He will only accept a settlement on his terms and will keep fighting until they’re met.

Ukraine’s foreign minister on Friday accused Russia of stalling peace negotiations, saying that Moscow had yet to share a promised memorandum outlining its peace terms. He said Kyiv wanted to see that document before sending a delegation to a new round of talks Moscow had proposed for Monday in Istanbul.

A bipartisan pair of US senators met with Ukrainian President Volodymyr Zelensky in Kyiv on Friday and urged stronger sanctions against Russia, while uncertainty swirls over whether the next round of peace talks will move ahead in the coming days.

A Ukraine presidential adviser says Ukraine is ready to resume direct peace talks with Russia in Istanbul on Monday but insists that the Kremlin provide a promised memorandum setting out its position on ending the war.

Türkiye is continuing preparations for a meeting between Ukraine and Russia in Istanbul. The talks are expected to take place next week, informs the Presidency of the Republic of Türkiye. Turkish President Recep Tayyip Erdoğan held a phone call with President Rumen Radev of Bulgaria.

Trump previously said it would take him "about two weeks" to know whether or not Russian President Vladimir Putin was serious about a peace deal.

By Olena Harmash and Vlad Smilianets KYIV/DNIPRO, Ukraine (Reuters) -Mariupol natives Oleksandr and Liudmyla Lytvyn fled home three years ago during Russia's 86-day siege of the port city in southern Ukraine.