If Syria's Christians switch sides, we can talk about their friendship. Until then they are just cogs in the machine that sent al Qaeda suicide bombers into Iraq and backed Iraqi Baathist insurgents for years in a fight where over 4,500 American troops died.
So just as we will have to oppose some of the Sunnis fighting Assad after Assad is defeated because some of those Sunnis are jihadis, we will need to help protect Alawites, Druze, and Christians who supported Assad out of fear of what the Sunni majority might do to them again if in charge again.
There aren't a lot of saints in this civil war. But we do have an enemy--Assad's Baathist regime. First things first, eh?
UPDATE: Of course, in general, Christians are being killed and oppressed by Moslems in much of the world:
Christians in countries with Moslem majorities, or large minorities, are having a difficult time getting the rest of the world to recognize that most (as in about 80 percent) of the religious violence in the world is carried out against Christians and most of the violence is committed by Moslems. This is because the Islamic world, while unable to do much in terms of economic, scientific, or cultural progress, or even govern themselves effectively, have proven quite adept at convincing leaders and media organizations in the West that Islam is not the aggressor and is actually the victim. For those who have spent any time living among Moslems, this all seems absurd. But this delusion is real.
We face much less of a problem from our Moslem citizens so we have the luxury of fixating on the theoretical "backlash" that might develop after any attack by a Moslem hopped up on jihadi ideology. The rest of the world doesn't have that luxury.
Let's not be shy about killing and identifying the jihadi murderers before they do more damage.