TOKYO >> Japan’s incoming prime minister, Shigeru Ishiba, said he wanted to clean up his ruling party, revitalize the economy and see off security threats from powerful neighbors after triumphing in his fifth and what he called final leadership bid on Friday.

Japan’s governing party has picked former Defense Minister Shigeru Ishiba as its leader, setting him up to become prime minister next week.

Ishiba defeated economic security minister Sanae Takaichi in a runoff, after the two won the most votes in the first round in a crowded field of nine candidates.