Washington, Jan. 5 -- US Senator Lindsey Graham on Sunday (local time) claimed that Indian Ambassador to the US Vinay Mohan Kwatra spoke to him last month about India buying less Russian oil and asked him to tell US President Donald Trump to relieve the 25 per cent tariff.

Speaking to reporters aboard Air Force One alongside Trump, Graham said, "I was at the Indian Ambassador's house a month ago, and all he wanted to talk about was how India is buying less Russian oil. And he asked me to tell the President to relieve the 25% tariff."

This comes as US President Donald Trump has warned India of more tariffs over its continued imports of Russian oil.

"PM Modi's a very good man. He's a good guy. He knew I was not happy. It was important to...