Associated Press LVIV, Ukraine (AP) – Renewed efforts to rescue civilians from increasingly dire conditions in besieged and bombarded Ukrainian cities were underway. Days of shelling have largely cut residents of the southern city of Mariupol off from the outside world and forced them to scavenge for food and water. Meanwhile, the decommissioned Chernobyl nuclear site was knocked off the power grid Wednesday and forced to switch onto generators. That is a worrying new development that raised alarm about the plant’s ability to keep its nuclear fuel safely cool. Authorities announced another cease-fire to allow civilians to escape from Mariupol, Sumy in the northeast, Enerhodar in the south, Volnovakha in the southeast, Izyum in the east, and several towns in the region around the capital, Kyiv.