India, March 12 -- Amid the rising tensions over negotiating a nuclear deal, Iran's supreme leader Ayatollah Ali Khamenei on Wednesday said that the US' threats of possible military action if Tehran refused talks were "unwise".

"The US is threatening militarism. In my opinion, this threat is unwise. Iran is capable of retaliating and will definitely inflict a blow," Khamenei said in a meeting.

His remarks came in the backdrop of local media reports that said the foreign minister Abbas Araghchi had received US President Donald Trump's letter, which was delivered by senior UAE official Anwar Gargash, an AFP report said.

Khamenei, who said that he had not yet personally seen the letter, termed Trump's letter as a move to "deceive public o...