What exactly is the Iran threat?

http://www.alternet.org/news-amp-politics/video-noam-chomsky-what-exactly-threat-iran?akid=13338.294211.HzyrIG&rd=1&src=newsletter1040052&t=5

Noam Chomsky: 'What Exactly Is the Threat of Iran?' - Video

Chomsky challenges all the big assumptions and myths around this deal.