((a)) ** Determination by Secretary** The Secretary may make , or any other provision of this chapter, applicable with respect to an international organization to the same extent that it is applicable with respect to a foreign mission if the Secretary determines that such application is necessary to carry out the policy set forth in and to further the objectives set forth in .section 4306 of this titlesection 4301(b) of this titlesection 4304(b) of this title

((b)) ** “International organization” defined** For purposes of this section, “international organization” means—

((1)) a public international organization designated as such pursuant to the International Organizations Immunities Act (—288f–2) or a public international organization created pursuant to a treaty or other international agreement as an instrument through or by which two or more foreign governments engage in some aspect of their conduct of international affairs; and

((2)) an official mission (other than a United States mission) to such a public international organization,