Kaveh L. Afrasiabi, author of the article 'Iran’s security concerns weigh heavy' in the Asia Times Online, discusses Iranian security from a non-U.S. perspective, the problems presented by instability in Pakistan, tensions between Sunni and Shia throughout the region, how the U.S. embargo on Iran hurts U.S. companies and the similar meaning of President Obama’s 'clenched fist' metaphor and Bush’s 'axis of evil' designation.