My Guess Is the NK's snatched them. They have a extensive history of doing this. I doubt Clinton Promised them a single thing. The whole thing was just a ploy to make the little munchkin feel big and in charge. Look at what actually happened. NK told the women they would be willing to release them if a High ranking personage came to NK and asked for their release. Look who they got to do it. Love Him or hate him no one will deny He has a boatload of starpower on the world stage. NK essentially just made a former 2 term president of the united states come and beg the worlds shortest, noisiest, laughingstock junior dictator for the freedom of those 2 women. Sort of the international politics way of makig someone wash your feet.
Either that or the little fellas PS3 was broken and this was the only way for him to get a new one.