Canada announced counter-tariffs on U.S. goods ranging from 15 percent to 50 percent in Ottawa on Tuesday, escalating the trade war with the United States. The retaliation takes effect September 8 and is meant to match U.S. tariff levels. Canada also unveiled a $5.4 billion aid package for affected firms and workers. Finance Minister Francois-Philippe Champagne said Canada would meet the challenge united.

This combination of pictures created Tuesday shows U.S. President Donald Trump, left, in Myrtle Beach, South Carolina on Aug. 21 and Canadian Prime Minister Mark Carney in Levis, Quebec, Canada on Aug. 24. Canada on Tuesday announced counter-tariffs on U.S. goods ranging between 15 percent and 50 percent, intensifying the trade war between the historically close allies. Ottawa's retaliation takes effect Sept. 8, a timeframe earlier outlined by Prime Minister Mark Carney after U.S. President Donald Trump's 50-percent duties on Canadian products came into place on Aug. 22. AFP-Yonhap

OTTAWA — Canada on Tuesday announced counter-tariffs on U.S. goods ranging between 15 percent and 50 percent, intensifying the trade war between the historically close allies.

Ottawa's retaliation takes effect September 8, a timeframe earlier outlined by Prime Minister Mark Carney after U.S. President Donald Trump's 50-percent duties on Canadian products came into place Saturday.