The test launch captured the world's attention, with the missile flying over Japan. But the flight of the Taepo Dong-1 appears to have been errant. If it were intended to launch a satellite into orbit, as the regime claimed, the eastward flight path would not have been necessary. No Dong missile showed similar problems. The missile was designed to have a solid fuel engine in its third stage, in order to dramatically extend its range to nearly 2,200 miles.
More recent research indicates the agency probably is correct and success soon is unlikely.
Hunting for technical clues to its problems as well as hard currency, Pyongyang continues to transfer technology and otherwise aid missile programs in Pakistan, Syria and Iran. While North Korea offers assistance in extending the range of missiles, it probably is using these programs as a cover to gain access to guidance technology, particularly from Iran. Iran probably has advanced its own program to the point where it develops many components indigenously. Tehran could be providing North Korea with technology and a location for covert missile research and development. This linkage has not escaped the US government.