Probably the same plan as Benghazi...
Allow diplomats to be kidnapped so we can release hard core terrorists in exchange.
Didn't work there only because not everyone got the memo and when the shooting started, the kidnappers thought they'd been set up and betrayed (it is, after all, what they would have done!) and murdered Amb Stevens in their rage.
So we ended up trading very high value terrorists for a deserter, so it's all good...
Thanks