Russia and Ukraine accused each other on Friday of violating a two-day ceasefire announced by Moscow to cover the celebrations of the Soviet ?Union's victory over Nazi Germany. The Russian Defence Ministry said 264 Ukrainian drones had been downed in the early hours of Friday, while Moscow Mayor Sergei Sobyanin said the capital had been targeted and officials said the Urals region ?of Perm had been attacked with drones.Russia announced a ceasefire for May 8 to 10, ?when it celebrates the Soviet Union's victory over Nazi Germany and holds a military parade in Moscow. Russia had warned that any attempt...