US President Donald Trump issued a warning to former Russian President and Prime Minister Dmitry Medvedev, asking him to "watch his words," after the latter criticised Trump's foreign policy, The Hill reported.

"I don't care what India does with Russia," Trump wrote on Truth Social. "They can take their dead economies down together, for all I care. We have done very little business with India, their Tariffs are too high, among the highest in the World."

"Likewise, Russia and the USA do almost no business together. Let's keep it that way, and tell Medvedev, the failed former President of Russia, who thinks he's still President, to watch his words. He's entering very dangerous territory!" the president added.