Centcom's claim on preventing the transfer of weapons to Iran The United States Central Command issued a statement claiming: Instructions have been issued for the establishment of a task force to support efforts to prevent Iran from using land routes for the transfer of weapons. This special group is called "Iron Gate" and includes about 20 military personnel and civilians. This force will coordinate with government organizations to prevent Iran from using its borders and the Caspian Sea to transfer weapons. The establishment of this force strengthens Iran's naval blockade; The naval blockade has so far prevented the export of more than $25 billion worth of Iranian oil [Jumaran].