Japan's next PM Ishiba to face diplomatic tests at fall summits

TOKYO -- Japan's next prime minister, Shigeru Ishiba, will face immediate foreign policy challenges, from East Asian security to rising U.S.-China tensions, when he meets with other leaders on the diplomatic stage this fall. 

Ishiba, a former defense minister, is well-versed in security issues. He called for the creation of an Asian collective defense framework similar to NATO during the ruling Liberal Democratic Party leadership race.