The Assistant Secretary of Defense for Indo-Pacific Security Affairs, or ASD (IPSA), is the principal advisor to the Under Secretary of Defense for Policy (USD(P)) and the Secretary of Defense on international security strategy and policy on issues of DoD interest that relate to the governments and defense establishments of the nations and international organizations within the Asia-Pacific region. The position was originally titled Assistant Secretary of Defense for Asian and Pacific Security Affairs but was renamed by the Trump Administration alongside the renaming of the United States Indo-Pacific Command.