Prime Minister Justin Trudeau stands alongside Defence Minister Anita Anand, in Toronto, on Feb. 24.Chris Young/The Canadian Press Kevin Lynch was clerk of the Privy Council and vice-chair of BMO Financial Group. Jim Mitchell is an adjunct professor at Carleton University and former assistant secretary of the Privy Council Office. When U.S. President Joe Biden came to Canada in March, an increased contribution by Canada to the West’s collective security was surely at the top of his mind. The U.S. wants Canada to actually meet its NATO promise to spend 2 per cent of GDP on defence, to invest more...