On the freezing frontlines in Ukraine as winter war grinds on

Read MoreRepeated Russian attacks on energy have left millions of Ukrainians without power, water or heat during the brutal Ukrainian winter. CBS News foreign correspondent Debora Patta traveled to the northern frontlines in Kharkiv.Repeated Russian attacks on energy have left millions of Ukrainians without power, water or heat during the brutal Ukrainian winter. CBS News foreign correspondent Debora Patta traveled to the northern frontlines in Kharkiv.