Answering the Question
The pacifism of the PCUSA (and other) elites is indeed peculiar in that it simultaneously excuses / justifies violence by Islamic terrorists (among others) while demanding that our society do nothing to defend itself. It’s not so much that they oppose all violence as they oppose any violence in defense of Western Civilization. They operate from an ideology that blames Western Civilization for every defect in the entire world and that thus absolves anyone or anything else of moral agency and responsibility.
That is, since we (Western Civilization) are responsible (so they imagine) for all that’s gone wrong, we have no moral justification to oppose anything. The non-Western perpetrators of vile evil, on the other hand, are only responding to the evil that has been done to them by the West. Therefore, even their extreme acts of violent evil are excused. Thus, their position amounts to standing idly by while vile evil is done in order to preserve their false pretense of moral superiority.
While I’m certain that most Christian pacifists are motivated by an honorable, valid revulsion from violence and its larger consequences, there are sometimes less worthy motivations at work as well. For example, some pacifists appear willing to allow thousands of people to be murdered rather than soil their own presumed moral perfection. That is, the very lives of the victims of evil are deemed to be of less value than their own feelings of moral superiority. Other pacifists appear to implicitly accept the safety provided by armed police and the military while railing indignant over every act of protection that involves violence. That is, they happily benefit from armed protection as long as no actual act can be explicitly tied to them. As my previous posts have demonstrated, this is not the exercise of sound Christian morality.
So, my answer to the question “Can Christians support a war against Islamic terrorism?” is yes, under the right set of circumstances a Christian can. However, to say that a given position is possible does not mean that it is a necessity. Determining if we have reached the point of necessity is beyond the scope of this discussion.
Although there is much more that could be said, the time has come to move on.