U.S. Department of State. July 12, 2012.
Today, the United States is imposing additional sanctions on Iran’s nuclear and ballistic missile proliferation networks, and is also taking additional steps to prevent the evasion of sanctions by publicly identifying a group of Iranian front companies and banks. These actions are part of the United States government’s dual-track approach of increasing pressure to convince Iran to engage seriously and address the international community’s concerns about its nuclear program.
http://www.state.gov/r/pa/prs/ps/2012/07/194923.htm [HTML format].