Russian forces targeted Ukrainian emergency responders with a deadly “double-tap” attack, Ukrainian officials said, wounding two responders in the northern region of Chernihiv. Overnight, Russia launched nearly six dozen drones at 16 locations across Ukraine, military officials said, one of the smallest barrages in weeks. In the northern Sumy region, bordering Russia, a Russian drone slammed into a warehouse, sparking a massive blaze, officials said. In his overnight address, Ukrainian President Volodymyr Zelenskyy urged the United States to impose “strong” measures against Russia amid surging tensions among NATO’s easternmost members. Zelenskyy also repeated his stance that he is ready to meet with Russian President Vladimir Putin, who so far has rejected a summit on neutral ground.