The Aga Khan, spiritual leader of the Ismaili Muslims, walks with Prime Minister Stephen Harper down the Hall of Honour on Parliament Hill in Ottawa on Thursday, Feb. 27, 2014, as they make their way to a signing ceremony. (AP Photo/The Canadian Press, Sean Kilpatrick)
The Aga Khan, spiritual leader of the Ismaili Muslims, walks with Prime Minister Stephen Harper down the Hall of Honour on Parliament Hill in Ottawa on Thursday, Feb. 27, 2014, as they make their way to a signing ceremony. (AP Photo/The Canadian Press, Sean Kilpatrick)