As the Russian Army advances in the Kursk Region, Ukraine's forces struggle to maintain their positions, raising questions about the future of peace negotiations

Russian President Vladimir Putin has called on Ukrainian troops in the Russian region of Kursk to surrender, as diplomatic back-and-forth continues over a potential US-brokered ceasefire with Ukraine.

Ukrainian troops sprang one of the biggest surprises of the war by invading Russia's Kursk region last August, and Russia has taken more than seven months to eject them.