Ukraine struck a series of Russian military targets across occupied Ukraine and inside Russia overnight on May 21-22, the General Staff said on Friday. According to its statement, the targets included air defense systems, command posts, ammunition depots and troop concentrations.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. Among the targets struck was a Russian Osa (NATO name: SA-8 Gecko) system in occupied Donetsk. The surface-to-air missile system, introduced in the 1970s, is an all-weather, short-range system estimated at $10 million per unit, according to an earlier report by Ukraine’s Military Intelligence (HUR). Ukrainian forces also hit Russian command and observation posts in Novopetrykivka in the Donetsk region and Tyotkino in Russia’s Kursk region. In addition, Ukraine struck a Russian command center near Voskresenka in the Dnipropetrovsk region and a communications hub in Verkhniy Tokmak Druhyi in the Zaporizhzhia region. Ukraine targets Russian drone centers, troop concentrations The General Staff said Ukrainian forces also targeted Russian drone control points in Selydove, Malynivka and Vesele in the Donetsk region. Among other strikes, Ukrainian troops hit an ammunition depot in Velyka Novosilka, a logistics warehouse in occupied Donetsk, and another military supply depot in Rovenky in the occupied Luhansk region. Ukraine also carried out strikes against Russian troop concentrations near Selydove, Ukrainka and Pokrovsk in the Donetsk region, Malynivka in the Zaporizhzhia region and Troebortne in Russia’s Bryansk region.