Mexican President Claudia Sheinbaum spoke to President-elect Donald Trump after he threatened to impose tariffs and she hinted at retaliation in a letter.

The leaders of Mexico and Canada responded quickly, and in different ways. Justin Trudeau, Canada’s prime minister, jumped on the phone to Mr Trump to chat about the “intense and effective connections” between their countries. His deputy, Chrystia Freeland, released a statement about the importance of border security.