If their demands are not met, they appear to have said they will shot one hostage an hour on live international television, until their demands are accepted by the US publically.
If they carry out that threat it would be their doom. A live tv broadcast in a warzone could be tracked immediately. It will be as obvious as a pile of crap in a ballroom. They aren't going to get an 'international' tv signal without their own satellite or someone elses. My advice to the president is track the signal, deploy special forces,
(or a warship based cruise missle as they are faster, deadlier and easier to brief), to the location and then get yerself a new interim Ambassador.
Badda bing badda boom. Problem solved.
The Prez really shouldn't be bothering a man of my talent over every little detail.
Ahk