The President spoke to Republic of Korea President Lee Myung-bak this morning to consult and coordinate on the response to North Korea’s announced nuclear test. The two leaders condemned this highly provocative violation of North Korea’s international obligations. They agreed to work closely together, including at the United Nations Security Council, to seek a range of measures aimed at impeding North Korea’s nuclear and ballistic missile programs and reducing the risk of proliferation. President Obama unequivocally reaffirmed that the United States remains steadfast in its defense commitments to the Republic of Korea, including the extended deterrence offered by the U.S. nuclear umbrella. The President also thanked President Lee for his leadership and friendship over the past four years and pledged to work closely with President-elect Park to further strengthen U.S.-ROK cooperation.