India, July 7 -- US President Donald Trump on Monday said he would impose a 25 per cent tariff on goods from Japan and South Korea starting on August 1.

The latest tariff announcement comes as Trump said he would be posting letters to the leaders of a dozen countries on Monday.

The US president announced the decision on his social media platform Truth Social, where he posted copies of letters that he sent to the leaders of each country.

The letters to the South-East Asian countries warned them not to retaliate by increasing their own import taxes or else the US administration would increase import taxes which could adversely affect the auto and electronics sectors of Japan and South Korea.

"If for any reason you decide to raise your T...