China is a member of many international organizations, holding key positions such as a permanent membership on the United Nations Security Council. In the early 1970s, the PRC replaced the ROC as the recognised government of "China" in the UN following Resolution 2758. As a nuclear power, China signed the Treaty on the Non-Proliferation of Nuclear Weapons in the United Nations. China's foreign policy today is summarized as strategic relations with neighboring countries and the world's superpowers to strive for China's national interest, and to create a favorable environment for China's domestic development for perpetual competition in the world in the long-run.