Michigan, Oct. 25 -- US President Donald Trump has defended military action against Iran, claiming American strikes had destroyed the country's nuclear capacity and arguing that Tehran could use a nuclear weapon if allowed to develop one.

Highlighting the existential stakes involved, Trump maintained that pre-emptive action was non-negotiable to prevent a devastating nuclear conflict.

"You want to see problems? You want to see not only energy problems, but death problems? Let them have a nuclear weapon, because they would use it. And I have to do that first. I knew when I did it, we blew the hell out of their nuclear capacity, you know that, and far greater than anyone even thought. It's gone," Trump said while talking to FOX 2's Roop R...