Targets left undestroyed by this week’s barrage of Russian missiles into Ukraine are set to be retargeted, warned Russian President Vladimir Putin on Friday, even as a Ukrainian counteroffensive prompted calls for Russians to flee in the south. Russian missiles struck a variety of Ukrainian targets this week, payback for an attack last weekend on a bridge linking Russia to the annexed Crimean Peninsula, which Russia says was the work of Ukrainian saboteurs. Around 20 people died. On Friday, Putin noted that seven of 29 targets, “were not damaged as planned by the Defence Ministry. But the atta…