Ukrainian drone flies near Moscow: 'It's a retaliatory attack' From the 25th to the 26th, a drone of the Ukrainian army flew in the suburbs of Moscow, the capital of Russia, and damaged several buildings. In Ukraine, there was just a large-scale drone attack by Russian troops prior to this, and local Ukrainian media are reporting that it is a retaliation attack. The UN Observatory for Human Rights in Ukraine said more than 2,560 civilians, including more than 1 children, have been killed in Ukraine since Russia's military invasion began in February last year.