- Russia could defeat Ukraine if the West ceases its support, says ex-NATO chief Philip Breedlove.
- Breedlove was NATO's top commander from 2013 to 2016.
- He told Newsweek that "tens of thousands of more Ukrainians will die" if the West abandons them.
Former NATO chief Philip Breedlove says Ukraine faces defeat in its war against Russia without the West's support.