BUCHAREST, Nov 28 (Reuters) - Russia will likely continue attacking Ukraine's power grid, its gas infrastructure and basic services for the people, NATO Secretary-General Jens Stoltenberg said on Monday."Doing that when we enter winter demonstrates that President (Vladimir) Putin is now trying to use ... the winter as a weapon of war against Ukraine," he told reporters at a news conference in Bucharest ahead of a two-day NATO foreign ministers' meeting.Our Standards: The Thomson Reuters Trust Principles."