We have a lot of Muslim allies, too.
No Muslim worth his salt will cooperate of collaborate with Infidels. The fundamentals of the religion forbid this. What we have is Muslim heretics who can't abide by the teachings of their faith and the example set by Muhammad. The people are more interested in worldly things than spiritual things and getting along with Infidel scum is just fine with these people.
Just about every religion suffers from people who claim to be of the religion but want to pick and chose the articles of faith to suit their worldly lifestyles.
The Muslims who become infidel collaborators can't stand up to the Wahabbis who teach the religion as written, and lived by Muhammad. Don't befriend Infidels, enslave convert or kill them. That is the fundamentals of the religion.
Don't take my word. Listen to them, and read the Koran and Hadiths. - tom