guardian.co.uk — Pyongyang vows to go ahead with launch of what it says is a satellite, but US fears is a disguised long-range missile testNorth Korea has moved three stages of a long-range rocket into position for a controversial launch in defiance of international warnings against violating a ban on missile activity.Foreign news agencies were allowed a first-hand look at preparations under way at the coastal Sohae satellite station in north-western North Korea.North Korea announced plans last month to launch an observation satellite during mid-April celebrations of the 100th anniversary of the birth of its founder Kim Il-sung.