Russia struck over 90 military targets in Ukraine overnight, killing at least 500 Ukrainian soldiers and destroying dozens of armoured vehicles, artillery and other military equipment, the defence ministry said. Russia also said it struck two ammunition depots in Ukraine’s eastern Kharkiv region. Meanwhile, the Russian-backed separatist leader of the Ukrainian breakaway region of Donetsk urged Moscow on Tuesday to launch the next stage of its military campaign in Ukraine after reaching the region’s frontiers. Denis Pushilin, the leader of the self-proclaimed Donetsk People’s Republic, said on …