ISTANBUL   The man who assassinated former Japanese Prime Minister Shinzo Abe has filed an appeal against the life sentence handed down against him by a court, local media reported Wednesday. Tetsuya Yamagami submitted the appeal to the Osaka High Court, according to Kyodo News Agency. Yamagami, 45, who admitted to shooting Abe with a homemade gun during a campaign speech in Nara in July 2022, was sentenced to life imprisonment by the Nara District Court last month. He was found guilty of