U.S. Secretary of State Marco Rubio said on Friday he had "positive and constructive" talks with Chinese Foreign Minister Wang Yi, as the two major powers vied to push their agendas in Asia at a time of tension over Washington's tariff offensive.

The levy injects fresh turmoil into a strained bilateral relationship and is a setback as Prime Minister Mark Carney negotiates a new economic partnership with the U.S.

Canadian goods imported into the U.S. will face a blanket 35 percent tariff starting next month, President Donald Trump said Thursday in an announcement that came in the midst of active trade negotiations between the two countries.