Can NATO and Ukraine survive without the United States?

Europe is staring down the barrel of a stark new reality where the United States being the backbone of NATO – the alliance that has guaranteed the continent’s security since 1949 for almost 80 years – is no longer a given.

​ Europe is staring down the barrel of a stark new reality where the United States being the backbone of NATO – the alliance that has guaranteed the continent’s security since 1949 for almost 80 years – is no longer a given. Read More Breaking News, Latest News and Videos | CNN