; or (ii) provide any other type of support that would render the United States a party to a conflict in which it is not already engaged or be more likely than not to do so. (4) The term serious risk of hostilities means any situation in which there exists a substantial possibility that United States forces (or, for purposes of paragraph (3)(B), foreign regular or irregular forces) will become engaged in hostilities, irrespective of any belief that the presence of such forces will deter the onset of hostilities. (5) The term specific statutory authorization means any joint resolution introduced after the date of the enactment of the War Powers Resolution Modernization and Accountability Act and enacted into law to authorize the introduction of United States forces into hostilities or into situations where there is a serious risk of hostilities that sets forth, at a minimum, the following: (A) A clearly defined mission and operational objectives, the identity of all specific entity or entities against which force is authorized, and the foreign country or countries in which the hostilities by such forces are authorized. (B) A requirement the President seek from the Congress a subsequent specific statutory authorization, in accordance with the requirements of section 4, for any expansion of the mission to include new operational objectives, additional enemy forces, or new countries in which such forces are operating, in each case to the extent not specifically identified in the previous authorization. (C) A termination of the authorization for the use of such forces within two years absent the enactment of a subsequent specific statutory authorization for such use of the United States forces. (6) The term substantially enlarge means, for any 30-day period, an increase in the overall number of United States forces, including temporary duty or rotational forces, that is the lesser of— (A) an increase of 25 percent or more of the number of such forces