Carney, a former Goldman Sachs executive with no experience in politics, becomes Canada's 24th prime minister.

Canada's new Prime Minister Mark Carney has asked Defense Minister Bill Blair to review the purchase of America’s F-35 fighter jet to see if there are other options “given the changing environment," a spokesman for Blair said Saturday.

He was born near the Arctic, led the central banks of two major economies and has become Canada's prime minister despite never having served in parliament. Climate has been central to the latter part of Carney's career,