White House Spokesman Tommy Vietor said in a statement:
North Korea’s launch today—using ballistic missile technology despite express prohibitions by United Nations Security Council resolutions—is a highly provocative act that threatens regional security, directly violates United Nations Security Council resolutions 1718 and 1874, contravenes North Korea’s international obligations, and undermines the global non-proliferation regime. This action is yet another example of North Korea’s pattern of irresponsible behavior. The United States remains vigilant in the face of North Korean provocations and fully committed to the security of our allies in the region. Given this current threat to regional security, the United States will strengthen and increase our close coordination with allies and partners.
On April 16, 2012, the United Nations Security Council expressed its “determination to take action accordingly in the event of a further [North Korean] launch.” In the hours and days ahead, the United States will work with its Six-Party partners, the United Nations Security Council, and other UN member states to pursue appropriate action. The international community must work in a concerted fashion to send North Korea a clear message that its violations of United Nations Security Council resolutions have consequences. The international community continues to insist that North Korea live up to its commitments, adhere to its international obligations, and deal peacefully with its neighbors.
North Korea is only further isolating itself by engaging in such provocative acts. Devoting scarce resources to the development of ballistic missiles and nuclear weapons has not brought it security and acceptance by the international community—and never will. North Korea will only truly strengthen itself by abiding by international norms, living up to its commitments and international obligations, and working to feed its citizens, to educate its children, and to win the trust of its neighbors.