Trudeau's ambivalence about Islamic radicalism is especially worrying. In 2012 he spoke at a major Islamic conference in Toronto, alongside renowned Islamists. Liberal Muslim, Jewish, gay, and feminist leaders asked to speak to him to explain why the conference was dangerous, but he was apparently too busy to meet any of them. He knows that to win an election, he has to win the Muslim vote.

In many ways it's less the lightweight Trudeau who is the problem than his handlers, who are the genuine power in this game of Canadian thrones. If he does win, Canada's domestic and foreign policy are likely to change fundamentally. Trudeau senior caused enormous damage, but arguably in a less volatile age. His son and his people are intent on continuing daddy's work, in an era where lack of resolve could lead to disaster.