Without his parents death as a catalyst, he would have never sought out his training, and without his particular training, he would never have been the vigilante hero we know and love.

FORBES: Moulded By Pain: 'Injustice: Gods Among Us #4' Review

But few dispute that Wallenberg set about his task with such vigour and courage that his place in history would have been assured - with or without his own death.

BBC: Profile: Sweden's Holocaust hero

However, without a body, and without a clear reference to his death among remaining al-Qaeda operatives, such an assumption is a brave one to make.

ECONOMIST: A breakthrough