- 39 updates
Foreign Secretary William Hague has urged China to use its diplomatic leverage with North Korea by supporting fresh sanctions against the regime.
NATO condemned North Korea's nuclear test, saying it poses a "grave threat" to international peace.
China expressed its "firm opposition" to North Korea's nuclear test today.
The Chinese also called on North Korea to abide by its denuclearisation pledge and not to "take additional actions that could cause the situation to further deteriorate."
Japan's Meteorological Agency has held a news conference where they showed charts that detected seismic activities in North Korea at 3am GMT this morning.
North Korea state television earlier confirmed that it had carried out a nuclear test, which has received widespread condemnation from the international community.
Google Earth last week captured new images of North Korea's nuclear site - where a test was conducted today.
The facility in the North Hamgyong Province can also be seen on Google Maps at the latitude/longitude of 41.278047,129.087372.
The UN Security Council will hold an emergency meeting in New York on North Korea's nuclear test this afternoon.
Obama added that the US would "continue to take steps necessary to defend ourselves and our allies" and that they would work with other nations "to pursue firm action."
President Obama said the North Korea nuclear test poses a threat to the US and international peace and security.
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Welcome to a more dangerous world, welcome to a world with a new nuclear power and to a world where the global powers are threatened.
Testing nuclear weapons is North Korea's way of saying we can defend ourselves, you have to take us seriously.