Russia 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 targets across Ukraine,military officials said,one of the smallest barrages in weeks. In his overnight address, Ukrainian President Volodymyr Zelenskyy urged the United States to impose strong measures against Russia amid surging tensions among NATOs 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. NATO must respond forcefully to Russian violations -- including potentially by shooting down Russian jets, Czech President Petr Pavel said.