Russian missiles and drones have pounded Ukraine’s energy grid in recent weeks, plunging people into frozen darkness in one of the country’s coldest winters on record.Ukraine has accused Russia of illegally targeting power infrastructure during the war to deny civilians light,

By Olena Harmash KYIV, Feb 4 (Reuters) - Ukrainian and Russian negotiators wrapped up the first day of new U.S.-brokered talks in Abu Dhabi on Wednesday, seeking to advance efforts to end Europe's biggest conflict since World War Two as fighting raged on.