India, Aug. 12 -- US President Donald Trump has said that its steep tariffs on India over its import of Russian oil have dealt a "big blow" to Moscow's economy, which he said was not performing well.

"I think Russia has to get back into building their country. It's a massive country.They have tremendous potential in Russia to do well. They are not doing well. Their economy is not doing well now because it's been very well disturbed by this," he said.

"Doesn't help when the President of the United States tells Their largest or second-largest oil buyer that we're putting a 50 per cent tariff on you if you buy oil from Russia. That was a big blow," he added.

He said that no one would be this tough and I haven't stopped there. "I was gonn...