Canada on Tuesday announced retaliatory tariffs against the United States , as relations between the neighbors faltered following failed trade talks last week.

Prime Minister Mark Carney's government in Ottawa also announced financial support for businesses and workers impacted by the latest dispute with the Trump administration.

It listed some 700 US products that would be subject to either 15%, 25% or 50% tariffs as of September 8, in steps designed to match those announced earlier in the week by US President Donald Trump.

The US is Canada's largest trading partner, and Canada is the second largest for the US, trailing only fellow neighbor Mexico. Several such disputes have marked both of Trump's terms.

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