The G-7’s show of unity in Quebec papered over Trump’s dismissiveness of Canada as a sovereign country and threats to impose tariffs on European wine and liquor.

Senior Chinese and Russian diplomats said dialogue should only resume based on "mutual respect" and all sanctions ought to be lifted.

China and Russia joined Iran in denouncing US sanctions and backed efforts to restore a landmark nuclear deal with Tehran that President Donald Trump abandoned in his first term and now wants to replace.