President Donald Trump imposed an additional 25% tariff on India as punishment for importing Russian oil, according to a document posted on the White House website — an escalation of his trade battle with New Delhi and his first use of so-called secondary sanctions on countries the US says are fueling Moscow’s war machine.

U.S. President Donald Trump on Wednesday imposed an additional 25% tariff on Indian goods, citing New Delhi's continued imports of Russian oil in a move that sharply escalated tensions between the two nations after trade talks reached a deadlock.

Trump slaps another 25pc on New Delhi, taking rate to a whopping 50pc; new import tax to take effect in three weeks.