an anchor of the U.S. security role in Asia security treaty The U.S.-Japan Security Alliance an anchor of the U.S. security role in Asia an anchor of the U.S. security role in Asia an anchor of the U.S. security role in Asia provider of security guarantees an anchor of the U.S. security role in Asia decades-long strategic agreement an anchor of the U.S. security role in Asia an anchor of the U.S. security role in Asia decades-long strategic agreement an anchor of the U.S. security role in Asia The U.S.-Japan Security Alliance United States–Japan