Politico reports warning of potential damage to U.S. national security, the Justice Department on Friday asked a federal judge to halt a civil lawsuit against one of the most prominent private organizations fighting Iran's nuclear program. The invocation of the state secrets privilege in Greek shipping magnate Victor Restis's lawsuit against United Against Nuclear Iran is unusual because the U.S. Government is not a party to the litigation, but is insisting that allowing the suit between the private parties to proceed any further will jeopardize American secrets that must be kept under wraps. "The Government has concluded that information that would be at risk of disclosure in discovery and further proceedings is properly subject to the state secrets privilege and should be excluded from this case. Further, because information subject to the state secrets privilege is inherently at risk of disclosure in further proceedings, the Government also seeks dismissal of this lawsuit," government lawyers wrote in legal memorandum supporting the motion. "The United States cannot publicly specify the particular information that is privileged, other than to state that the information is directly implicated by and at risk of disclosure in further litigation of plaintiffs’ claims."