President Donald Trump said he would be “substantially raising” the tariff on Indian exports to the US over the Asian nation’s purchases of Russian oil, a move New Delhi slammed as unjustified in an escalating fight between the two major economies.

U.S. President Donald Trump again threatened on Monday to raise tariffs on goods from India over its Russian oil purchases, while New Delhi called his attack "unjustified" and vowed to protect its economic interests,