In a closely watched outcome, Canada on Monday chose a major German defence contractor over its South Korean competitor to build a US multibillion-dollar fleet of submarines, as mid-tier nations increasingly work together in the face of a less reliable United States. Canadian Prime Minister Mark Carney said that Ottawa chose Thyssenkrupp Marine Systems (TKMS)’s package over Hanwha Ocean Company’s. The move is expected to strengthen ties between Canada and Nato, which is holding a two-day summit.