The international community has been reacting to North Korea's announcement that it has tested a nuclear weapon.
US PRESIDENT GEORGE W BUSH
"The United States condemns this provocative act. Once again, North Korea has defied the will of the international community and the international community will respond...
"The transfer of nuclear weapons or materiel by North Korea to states or non-state entities would be considered a grave threat to the United States...
"Today's claim by North Korea serves only to raise tensions while depriving the North Korean people of the increased prosperity and better relations with the world offered by the implementation of the joint statement of the six-party talks. The oppressed and impoverished people of North Korea deserve that brighter future."
UK PRIME MINISTER TONY BLAIR
"We regard this very, very seriously indeed ... People are seized of the significance of this irresponsible act and there will be a response."
JAPANESE PRIME MINISTER SHINZO ABE
"We need to make a stern response and North Korea will be responsible for all the consequences ... Japan for its part will immediately start studying a response with stern measures."
SOUTH KOREAN PRESIDENT ROH MOO-HYUN
"It raises a serious threat to peace, not only for the Korean peninsula, but for the region ... In the long run, this is a dangerous play that could spark a nuclear arms build-up in other countries."
RUSSIAN PRESIDENT VLADIMIR PUTIN
"Russia definitely condemns the test in North Korea, and it is not Korea itself that counts, but the huge damage that was caused to the process of non-proliferation of mass destruction weapons all over the world."
CHINESE FOREIGN MINISTRY
"[North Korea] has ignored the widespread opposition of the international community and conducted a nuclear test brazenly on 9 October... The Chinese government is firmly opposed to this... The Chinese side strongly demands the North Korean side abide by its pledges on denuclearisation and to stop any action that would worsen the situation".
FRENCH FOREIGN MINISTER PHILIPPE DOUSTE-BLAZY
"France firmly condemns today's nuclear test by North Korea [which] poses a serious problem to international security. France will turn towards her partners in the Security Council to quickly come up with a reaction."
PAKISTAN FOREIGN MINISTRY SPOKESPERSON TASNIM ASLAM
"The Korean peninsula is a nuclear weapons-free zone and we are afraid that this step by DPRK is going to have a chain reaction which nobody wants."
INDIAN FOREIGN OFFICE STATEMENT
"We are deeply concerned at the reported nuclear test... It is unfortunate that [North Korea] conducted the nuclear test in violation of its international commitments and jeopardises peace, stability and security on the Korean peninsula and the region. The test also highlights the dangers of clandestine proliferation."
EUROPEAN UNION PRESIDENCY STATEMENT
"This test profoundly jeopardises regional stability and represents a severe threat to international peace and security."
GERMAN FOREIGN MINISTER FRANK-WALTER STEINMEIER
"Today's test jeopardises peace and security in the region and beyond. [The test pushes North Korea] further down the wrong path, to self-imposed isolation."
VENEZUELAN FOREIGN MINISTER NICOLAS MADURO
"We condemn all nuclear tests because of the immense damage to
the planet, to life on the planet.
"We oppose the proliferation of nuclear weapons and we are making an effort the world over to have those countries with nuclear weapons gradually disarm."
AUSTRALIAN PRIME MINISTER JOHN HOWARD
Australia will "advocate a UN Security Council regime against [North Korea] which includes targeted financial and travel sanctions, other trade restrictions and/or aviation restrictions".
INTERNATIONAL ATOMIC ENERGY AGENCY
"This reported nuclear test threatens the nuclear non-proliferation regime and creates serious security challenges not only for the East Asian region but also for the international community."