No action shall be maintained under section 2333 of this title for injury or loss by reason of an act of war.

If a party to an action under section 2333 seeks to discover the investigative files of the Department of Justice, the Assistant Attorney General, Deputy Attorney General, or Attorney General may object on the ground that compliance will interfere with a criminal investigation or prosecution of the incident, or a national security operation related to the incident, which is the subject of the civil litigation. The court shall evaluate any such objections in camera and shall stay the discovery if the court finds that granting the discovery request will substantially interfere with a criminal investigation or prosecution of the incident or a national security operation related to the incident. The court shall consider the likelihood of criminal prosecution by the Government and other factors it deems to be appropriate. A stay of discovery under this subsection shall constitute a bar to the granting of a motion to dismiss under rules 12(b)(6) and 56 of the Federal Rules of Civil Procedure. If the court grants a stay of discovery under this subsection, it may stay the action in the interests of justice.