The purpose of completing a PIRA is to determine at the outset whether the RIA requirements apply and whether RIAT involvement is required. Because the generic.This publication lists treaties and other international agreements of the United States on record in the. International law is derived primarily from two sources: international agreements and customary international practice. The Cook Islands maintains diplomatic relations with various countries and is a member of multilateral organisations. International treaty examination of the Agreement between the. Government of New Zealand and the Government of the. Status of Ratification Interactive Dashboard. Convention on Conservation of Nature in the South Pacific Region (Apia Convention). Congressionalexecutive agreement a complete alternative to a treaty).