After a week of ruling party infighting, Australia has a new prime minister. Scott Morrison, a veteran government official who most recently served as national treasurer, won the post Aug. 24 after members of the Liberal Party voted to oust Malcolm Turnbull from office over his attempt to set an emissions-reduction target for Australia. The issue ignited tensions between Turnbull and the conservative wing of the Liberal Party, as the party hopes to improve its performance in polls ahead of next year's elections. In a closed-door contest three days after Turnbull narrowly survived the first challenge to his leadership, Morrison defeated Peter Dutton, Turnbull's most vocal challenger, by a vote of 45-40....