We had crossed into Libya and were approaching our final turn over the bleak desert landscape when Walter informed me that he was receiving missile launch signals.

Following some relief in Washington that Pyongyang's missile launch proved a failure, the threat to abandon the talks presents a formidable challenge to Obama.

The mobile missile launch platform(MMLP) is the weapon of army, while the autonomous defense technology(ADT) plays more important role in improving the survival ability of weapon and equipment.