US sanctions on Iran (3)

The US suspects six Iranian firms of dealing with weapons of mass destruction. For this the Treasury Department froze their assets in the US. In doing this tensions between Iran and the US are increased even further, and Iran's economy gets hurt even more. Losing foreign assets for Iran is a major deal, because it doesn't have many due to being an export based economy. http://www.washingtonpost.com/business/industries/us-slaps-new-sanctions-on-iranian-firms-shipping-executives/2012/03/28/gIQAOq5wgS_story.html