A woman takes a selfie with the help of a LED lighting on a street during blackout in the Western Ukrainian city of Lviv on December 15, 2022, amid the Russian invasion of Ukraine. - With temperatures dipping below zero, repeated Russian attacks have left Ukraine's energy grid teetering on the brink of collapse and have disrupted power and water supplies to millions over recent weeks. (Photo by YURIY DYACHYSHYN / AFP)