US President Donald Trump has indicated that his defence secretary, Pete Hegseth, may have been the one who pushed America towards launching a war on Iran. On Monday, Trump told the media that Hegseth was the first person on his team to suggest launching military operations against Tehran. "I called Pete, I called General [Dan] Caine. I called a lot of our great people... And I said, 'Let's talk. We got a problem in the Middle East. We have a country, known as Iran, that for 47 years has been just a purveyor of terror, and they're very close to having a nuclear weapon. We can keep going and get that 50,000 up to 55 and 60, there's no end, or we can take a stop and make a little journey into the Middle East and eliminate a big problem," Trump said at a Memphis Safe Task Force roundtable in Tennessee while sitting beside the Pentagon chief.