The European Union (EU) and Mexico have expressed disappointment at US President Donald Trump's threat to impose 30% tariffs on their imports from 1 August, BBC reported.

Mexico criticised what it called Trump's "unfair deal" and insisted its sovereignty is non-negotiable, while the EU's chief, Ursula von der Leyen threatened to take "proportionate countermeasures", if needed. Both said they want to keep negotiating with the US.

Trump has warned he would impose even higher import taxes if either of the US trading partners decided to retaliate.

This week Trump also announced new tariffs on goods from Japan, South Korea, Canada and Brazil from next month, according to BBC.