These ladies were of no value any more for North Korea. There whole intent in snatching these ladies on the Chinese side of the border was to use them as leverage in nuke talks. Since that didn't pan out they realized they might as well get some good PR from it and have a ex-President pay old Kim Jong a visit on top of the forced confession and show trial. Anyone who thinks North Korea and Kim Jong are not above abducting hostages in a attempt to gain something politically from their rivals must be into buying ocean side property in Nevada.