Economic security is referred to as the government's policies and guidelines used to improve the national economy as well as the people's livelihood through the coordination and cooperation of the international political economy as well as the establishment of a domestic system. Japan's postwar economic security theories and policy concepts have evolved from "expanding trade and economic influence in East Asia" and the ODA into "ensuring a stable supply of resources" and comprehensive security after the oil crisis, and then subsequently developing into "providing a stable living environment for the people" and "strengthening the country's competitiveness" during the regional economic integration period as well as under the EPA and TPP.