This file photo shows North Korean officials and foreign journalists leaving the launch pad after a visit to see the rocket Unha-3 at Tangachai-ri space center, in April. A few days later, N.Korea ... more 

This file photo shows North Korean officials and foreign journalists leaving the launch pad after a visit to see the rocket Unha-3 at Tangachai-ri space center, in April. A few days later, N.Korea carried out a failed rocket launch in what it said was a bid to put a satellite into orbit less