US officials have landed in Moscow to discuss a potential ceasefire with Ukraine.

Special envoy Steve Witkoff arrived on Thursday morning to try to convince Russia to accept a 30-day ceasefire, which Ukraine agreed to earlier this week in talks with the US.

Earlier, Kremlin spokesman Dmitry Peskov said talks were planned with the US, but added: "Let's not get ahead of ourselves, we'll tell you about them later."

The American visit comes as the Russian military claimed to have recaptured Sudzha - a key town in the Kursk region that Ukraine invaded last year in a surprise attack.