(Reuters) – Ukraine’s government appealed to people to conserve energy amid relentless Russian strikes that have halved the country’s power capacity, as the United Nations health body warned of a humanitarian disaster in Ukraine this winter. POWER SUPPLIES * Ukraine’s national power grid operator said the damage dealt to Ukrainian power-generating facilities by Russian missile attacks was “colossal” but he dismissed the need to evacuate civilians. * The Kremlin said no substantive progress had been made towards creating a security zone around Zaporizhzhia nuclear power plant in southern Ukrain…
