Washington DC, March 13 -- US president Donald Trump on Friday (local time) vowed to intensify military strikes against Iran in the coming days, saying US forces have already destroyed 90 per cent of Iran's missiles, according to an interview reported by Fox News.

Speaking in an interview that aired on the 'Brian Kilmeade Show', Trump said the military campaign was progressing faster than expected.

"We had no idea it would be this far ahead. We've knocked out close to 90 per cent of their missiles," Trump said.

The US president said American forces have targeted the majority of Iran's missile and drone manufacturing sites. "We're hitting them harder than anybody's been hit since World War II," he said.

While Trump did not provide a sp...