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 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.

Trump’s Middle East trip comes amid a heady few days for Turkey, with news the PKK would disarm and as it is set to host delegations from Russia and Ukraine.

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.

Ukrainian President Volodymyr Zelensky says he will be present in Turkey for direct negotiations with Russian President Vladimir Putin, telling CNN’s Nick Paton Walsh he expects new sanctions to be imposed on Russia if a 30-day unconditional ceasefire isn’t agreed upon.

Zelensky appealed to Trump on X Monday, asking him for his full support and potentially a visit to Turkey to discuss a possible cease-fire deal.