India has launched a complaint against the US to challenge US President Donald Trump's tariffs on steel and aluminium, a filing published by the World Trade Organization showed on Wednesday.
Indian officials told Reuters last month that their government would open a WTO dispute if the country's firms were not granted an exemption.
Trump imposed the tariffs in March, levying 25 per cent on steel imports and 10 percent on aluminium. He said they were justified by national security concerns and therefore outside the WTO's remit.
India, China, Russia, Japan, Turkey and the European Union have all dismissed that claim,