India, Aug. 26 -- The Indian rupee weakened against the U.S. dollar in the Asian session on Tuesday, after the Trump administration officially issued a notice regarding the imposition of an additional 25 percent tariffs on Indian imports, with the punitive duties set to kick in at 12:01 am (EST) on August 27.

On the trade front, there seems to be no hopes for tariff relief as the U.S. officials have already cancelled the scheduled visit to India during August 25-29.

India was warned by US President Donald Trump that if it kept purchasing Russian oil, he would punish it with higher charges.

"No matter how much pressure comes, we will keep increasing our strength to withstand it," Prime Minister Modi said at a public rally in Ahmedabad's N...