I'm not Tom.
We shouldn't support ANY side there.
I will be criticized for posting what follows next, but...
... in a war between muslims, the best outcome for The West is that as many muslims die as possible.
For The West, "victory" there would mean:
a. ALL muslim "sides" are defeated
b. Any muslim leadership would be removed
c. A Christian/military governorship would be installed
d. Mosques and madrassas demolished
e. qurans collected and burned
f. Christianity declared the new religion, with all citizens automatically converted.
How's that? ;)