A Research Institute based in Washington said that North Korea has carried out a major update of its main rocket launch. U. s.-Korea Institute said that the revision of the Sohae station satellite launches to save probably larger missiles. Results were published in the Web picture korean rocket launch 2012 based Institute North of commercial satellites and 38 municipalities. The report said that no sign of an imminent rocket launch, but just warns that it could happen at the end of the year. Pyongyang has received international condemnation in 2012, after sending a satellite into orbit by a rocket Unha-3. The North said the Institute should develop a much larger rocket, but it is possible that at least some years after completion of the. Until the biggest rocket in operation, the research group said that North Korea could begin, an other rocket installations Unha de Sohae. North Korea threatens nuclear war against the South Korea, Japan and the United States regularly, but he insists that its missile program is peaceful. The isolated Communist Government is banned by UN sanctions for carrying out nuclear tests and ballistic missiles,. .