Ukraine’s President Volodymyr Zelensky raised the stakes ahead of a potential meeting with Vladimir Putin in Turkey on Thursday by saying he wouldn’t hold talks with any Russian representative other than the president himself.

Putin hasn't yet said whether he will be at the talks, which Trump has urged Ukraine and Russia to attend as part of Washington's efforts to stop the fighting.

Ukrainian President Volodymyr Zelensky has said he will travel to Turkey's capital Ankara to meet President Recep Tayyip Erdogan and will be available for direct talks with his Russian counterpart, Vladimir Putin, in Istanbul on Thursday.