“ In carrying out its purpose set forth in section 2, the ASO shall:
(a) support executive departments and agencies in building the civilian capabilities of the Government of Afghanistan, including expansion of central services by the Government of Afghanistan, development of a thriving private sector economy, and improvement in the governance of Afghanistan’s territory and borders; and (b) perform such other functions related to the specific project set forth in section 2 as the Secretary of State (Secretary) may assign. ”