Repairs to Ukraine’s power grid after a major Russian airstrike are expected to take several weeks, the country’s state grid operator Ukrenergo said on Saturday. Vitaliy Zaichenko, head of Ukrenergo, told the Ukrainian state television’s continuous news broadcast that the situation is severe, and the restoration process would take weeks rather than days. The extensive damage means power cuts have been extended from four to eight hours to 12 to 16 hours in most regions, Zaichenko said, often leaving households without running water as well. Russian strikes overnight into Saturday targeted energ…