By Erin Banco, Gram Slattery and Humeyra Pamuk WASHINGTON/RIYADH/ANTALYA, Turkey (Reuters) - U.S. President Donald Trump's senior envoys Steve Witkoff and Keith Kellogg will travel to Istanbul for potential talks on Thursday on how to end the war in Ukraine,

Ukrainian President Volodymyr Zelenskyy comments mark the latest move in a weekend-long exchange of proposals from both sides on the next steps in the U.S.-led peace effort.

"US President Donald Trump's Envoys, Steve Witkoff and Keith Kellogg, will travel to Istanbul on Thursday for possible talks on how to end russia's war in Ukraine. A senior US official said Washington does not expect an announcement on Moscow's plans until early Thursday morning," the report said.

Ukrainian officials say Russia launched more than 100 drones, rejecting calls for a ceasefire as Zelenskyy says he'll "be waiting for Putin" to join him for direct talks in Turkey.

ANKARA (Reuters) - Turkey is ready to host negotiations for a ceasefire and permanent peace between Russia and Ukraine, President Tayyip Erdogan told his French counterpart Emmanuel Macron in a phone call on Sunday, Erdogan's office said.

Eni delivered gas last year from Russia to Turkey, documents posted on the Italian energy group's website showed on Monday, confirming the company was still dealing in Russian gas despite suspending supplies within Europe.