Canada on Friday suspended its extradition treaty with Hong Kong to protest the tough new national security law China has enacted in the financial hub. Canada is also halting exports of sensitive military gear to Hong Kong and updating its travel advisory for the city so Canadians will know how the law might affect them, the foreign ministry said. “Canada is a firm believer in the ‘one country, two systems’ framework,” Prime Minister Justin Trudeau said, referring to the semi-autonomous model adopted after Britain returned Hong Kong to China in 1997.