The beheading of two Japanese hostages by ISIS causes the following things to happen:
1) one of the world’s largest pagan societies (neither Buddhist nor Christian, but Shinto) is outraged;
2) a country that could have stood outside this Christian-Islamic conflict is forced to become involved;
3) a country whose re-militarization could have been more difficult is handed an excuse to wage war again on a silver platter.
Smart move, dudes!
With such strategic finesse will ISIS be the cause of its own extermination.