Indian equities tumbled in early trade as renewed tariff threats from US President Donald Trump dampened investor sentiments. Sensex fell over 700 points while Nifty lost 200 points, marking a steep fall during the earnings season. Trump said last week that he plans to double the tariffs on steel and aluminium exports to 50% from 25%. His remark followed an accusation that China has violated their deal to mutually withdraw tariffs and trade restrictions.