Local officials have said a massive wave of strikes targeted the country’s energy infrastructure Russia launched a powerful wave of airstrikes across Ukraine overnight, local officials and media have said. Authorities have introduced rolling blackouts to stabilize the power grid. The strikes targeted Kharkov Region on the Russian border, Dnepropetrovsk in central Ukraine, and Kiev-controlled parts of Zaporozhye Region, local officials said.  There have also been reports of explosions in Kiev