President Donald Trump may join in on Russia-Ukraine peace talks in Turkey on Thursday, as the world awaits to see if Russian President Vladimir Putin will show up.

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

Moscow on Wednesday said it would send a delegation to Istanbul to meet with Ukrainian officials, bringing the two at-war countries together for direct talks.