Iran has its 'finger on the trigger'. But is it at its 'weakest' as US tensions soar?

SBS News reports that as the United States ramps up its military presence in the Middle East, Iran is threatening a forceful response to a potential attack.

But some experts say the regime is now at its "weakest", casting doubt on its ability to follow through.

USSC Associate Professor in American Studies and Foreign Policy Dr David Smith was quoted in the article on the nature of the military buildup.