President Obama had harsh words for North Korea, following its May 25 announcement that it conducted a nuclear test.

North Korea’s actions, President Obama said in a statement, “are a matter of grave concern to all nations. North Korea’s attempts to develop nuclear weapons, as well as its ballistic missile program, constitute a threat to international peace and security.”

By defying the United Nations Security Council, Obama said, North Korea “is directly and recklessly challenging the international community. North Korea’s behavior increases tensions and undermines stability in Northeast Asia.”