While it is true that at least the Carter Center is reporting on Syria when most organizations ignore it, the use of "PBUH" (and "Prophet", for that matter) indicates a less than objective viewpoint from Jimmy.
Just in case it crosses your mind that Carter is simply adopting the terminology used by locals as a gesture of respect, the Carter Center consistently refers to the Kotel, or Western Wall, as the "Wailing Wall" - a name that Jews never use and one that is, frankly, a little offensive in this day and age.
(h/t @hahussain)