Russia's claims that Ukraine is delaying exchange of soldiers' bodies are untrue, Ukrainian officials said on Saturday, urging Moscow to stop "playing dirty games" and return to constructive work. Kremlin aide Vladimir Medinsky said on Saturday that Ukraine had unexpectedly postponed exchanging prisoners of war and accepting the bodies of killed soldiers for an indefinite period.

We've just seen an update that Ukraine's delegation has arrived in Istanbul for the latest round of peace talks with Russia, according to Heorhii Tykhyi - a spokesperson for Ukraine's foreign ministry. We'll bring you the latest updates and analysis as we get it throughout the day.