The presence of Russian submarines and spy ships near undersea cables carrying most global Internet communications has U.S. officials concerned that Russia could be planning to sever the lines in periods of conflict, the New York Times reported on Sunday. The Times said there was no evidence of cable cutting but that the concerns reflected increased wariness among U.S. and allied officials over growing Russian military activity around the world. The newspaper quoted naval commanders and intelligence officials as saying they were monitoring significantly greater Russian activity along the cables' known routes from the North Sea to Northeast Asia and...