A woman walks past a huge poster depicturing a Russian soldier and a Z letter - a tactical insignia of Russian troops in Ukraine, in Sevastopol, Crimea, on April 23, 2022. - The "Z", which has become a symbol of support for Russian military action in Ukraine, is widely used by Russian authorities and President Putin supporters, decorating building facades, bus doors, car windscreens and T-shirts. (Photo by AFP)