Religious Fanatics don’t negotiate in the conventional sense of the word. They have to discuss theology, and if they won’t discuss it with Christians then find capable Muslims who can do it.
Saif Gadhafi tried rehabilitating Muslims and ended up with more like a barrel of monkeys, while his father was the fall guy for extraordinary rendition. If the Muslims don’t stab you in the back, the West will. But few will take the time to discuss theology.