Ukrainian servicemen wait in a trench on the frontline with Russia-backed separatists near town of Krasnogorivka, Donetsk region, on April 23, 2021. - Russia on Friday began withdrawing its armed forces that had been on manoeuvres near the borders of Ukraine following weeks of heightened tensions between Moscow and the West over the troop build-up. The deployment, which came amid an increase in fighting between Kiev's forces and pro-Russia eastern separatists since the start of the year, raised deep concerns in Ukraine and drew warnings to Moscow from Western allies. (Photo by Anatolii STEPANOV / AFP)