Malcolm Turnbull, Australia’s prime minister, speaks at the Australian Financial Review Business Summit in Sydney, Australia. (Photographer: Brendon Thorne/Bloomberg)

Australia's Turnbull Digs In as Rival Dutton Seeks Leadership

(Bloomberg) -- Australia’s embattled Prime Minister Malcolm Turnbull is digging in for a fight, saying he will only step aside if his chief rival can prove he has enough support to unseat him.