Obama: Nuclear test poses threat to security
President Obama said the North Korea nuclear test poses a threat to the US and international peace and security.
North Korea has just made this a more dangerous world
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.
Nuclear test is chilling tactics from North Korea
Testing nuclear weapons is North Korea's way of saying we can defend ourselves, you have to take us seriously.