In this chapter:

((1)) ** Appropriate congressional committees** Except as otherwise provided, the term “appropriate congressional committees” means—

((A)) the Committee on Foreign Relations and the Committee on Armed Services of the Senate; and

((B)) the Committee on Foreign Affairs and the Committee on Armed Services of the House of Representatives.

((2)) ** AUKUS partnership**

((A)) ** In general** The term “AUKUS partnership” means the enhanced trilateral security partnership between Australia, the United Kingdom, and the United States announced in September 2021.

((B)) ** Pillars** The AUKUS partnership includes the following two pillars:

((i)) Pillar One is focused on developing a pathway for Australia to acquire conventionally armed, nuclear-powered submarines.

((ii)) Pillar Two is focused on enhancing trilateral collaboration on advanced defense capabilities, including hypersonic and counter hypersonic capabilities, quantum technologies, undersea technologies, and artificial intelligence.

((3)) ** International Traffic in Arms Regulations** The term “International Traffic in Arms Regulations” means subchapter M of chapter I of title 22, Code of Federal Regulations (or successor regulations).