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Seiji Maehara, a candidate for president of the Democratic Party of Japan (DPJ) and former foreign minister, speaks ahead of the party's leadership election in Tokyo, Japan, on Thursday, Sept. 15, 2016. Renho, a half-Taiwanese former newscaster, was elected as leader of Japan's main opposition Democratic Party, despite criticism over a last-minute revelation that she had dual nationality. Photographer: Akio Kon/Bloomberg via Getty Images

Seiji Maehara, a candidate for president of the Democratic Party of Japan (DPJ) and former foreign minister, speaks ahead of the party's leadership election in Tokyo, Japan, on Thursday, Sept. 15, 2016. Renho, a half-Taiwanese former newscaster, was elected as leader of Japan's main opposition Democratic Party, despite criticism over a last-minute revelation that she had dual nationality. Photographer: Akio Kon/Bloomberg via Getty Images