purpose in terms of the potential target and so obvious ly it could reach the united states and the scud missile a much shorter range missile. they want a wide variety of weapons for them to choose from. why they choose to test the missiles they do when they choose to test them is very unclear. maybe they don't have one at that moment to test or they were just trying to send some other signal by shooting a scud missile this time. they do have a wide variety and for them it just comes down to strategy, to being able to use what missile for what purpose. >> i want to bring back retired u.s. air force colonel cedric lleyton and cnn's intelligence and security analyst bob baer with us and also bringing in