By Tom Balmforth, Vladimir Soldatkin and Huseyin Hayatsever ISTANBUL/ANKARA (Reuters) -Russia's Vladimir Putin spurned a challenge to meet face-to-face with Volodymyr Zelenskiy in Turkey on Thursday,

Rubio, who spoke to reporters in Antalya, said he would travel to Istanbul for meetings on Friday with Turkey's Foreign Minister Hakan Fidan and a Ukrainian delegation, but said he did not have high expectations for the talks.

Ukraine’s President Volodymyr Zelensky might meet Russia’s President Vladimir Putin in Turkey on Thursday – if the Russian leader decides to show up for a summit that he himself suggested.