India, Aug. 26 -- Indian shares tumbled 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.

With DHS' confirmation, India has become among the highest-tariffed countries in the world along with Brazil, facing 50 percent export duties on all its goods.

"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 Nikol area and stressed that his government will never let harm come to small entrepreneurs, farmers, and livestock rearers.

Fed independence worries, U.S. President Donald Trum...