The United States and South Korea are "very firmly united" in opposing North Korea's nuclear and ballistic missile programs, UPI quoted Secretary of State John Kerry as saying. Speaking in Washington after his meeting with visiting South Korean Foreign Minister Yun Byung-se, Kerry assured the political partnership between the two countries is a "significant example" of their commitment to engagement in the Asia Pacific and that "our alliance" is the linchpin of security and stability in Northeast Asia. The secretary also said the United States supports South Korean President Park Geun-hye's "firm, principled approach" toward North Korea. He urged North Korea to start fulfilling its international obligation and commitments relating to its denuclearization.