US envoy Steve Witkoff has arrived in Moscow for cease-fire talks with Russian President Vladimir Putin. The recent advances by Russia and President Trump's attempt to strike a peace deal have raised concerns that Ukraine could lose the war. Trump had proposed a 30-day cease-fire, which Ukraine supports. However, Putin has not mentioned the cease-fire idea and is seeking assurances and guarantees before agreeing to any truce. Russia is advancing swiftly in the Kursk region, and the town of Sudzha has already been taken by Russian forces.