The Globe and Mail reports in its Tuesday edition that the United States and China have agreed to de-escalate their trade war, a move that followed a similar tariff pact with Britain last week. The Globe's Mark Rendell writes that the question for Canada is whether America's recent deals with Britain and China point to a willingness on the part of President Donald Trump to negotiate further tariff concessions. Canada was not hit with the 10-per-cent baseline duty the U.S. imposed on other countries in April, but still faces tariffs on steel, aluminum and cars, as well as on goods that do not comply with the continental trade agreement's rules of origin. "At the margin, it helps Canada," BMO chief economist Douglas Porter said of the U.S.-China agreement. "Anything that's better for the global economy will be better for Canada. And I think ... it suggests there's plenty of leeway for the U.S. to negotiate away some of their toughest positions on tariffs." Mr. Porter said he is becoming more optimistic about the outlook for the Canadian economy in the coming quarters, given the declining odds of a U.S. recession, higher oil prices and the possibility of further tariff concessions, but "confidence was really shaken."