Oil prices will fall to below $100 a barrel within the next month because markets are over estimating the potential of Western military action against Iran, said Andrew Su, CEO of commodity and currency broker, Compass Global Markets.

"We've got a $15 premium built in (to the current price) because of this fear of an escalation in the Middle East, and that premium is going to unwind. The premium is excessive and we'll see oil fall below a hundred dollars in the next month or two," Su told CNBC on Tuesday.