Here's my op-ed that uses long-term orientation, probabilistic thinking, numeracy, consider the alternative, reaching our actual goals, avoiding intuitive emotional reactions and attention bias, and other rationality techniques to suggest more rational responses to the Paris attacks and the ISIS threat. It's published in the Sunday edition of The Plain Dealer, a major newspaper (16th in the US). This is part of my broader project, Intentional Insights, of conveying rational thinking, including about politics, to a broad audience to raise the sanity waterline.
What terrorists want is irrelevant. "Don't play into enemy hands" is irrelevant. The entire discussion is irrelevant.
The correct response to enemy action is the response that furthers your own ends. It doesn't matter what effect this has on your enemy, good, neutral, or positive; your long-term ends matter.
"The primary thing when you take a sword in your hands is your intention to cut the enemy, whatever the means. Whenever you parry, hit, spring, strike or touch the enemy's cutting sword, you must cut the enemy in the same movement. It is essential to attain this." A particularly relevant quote from Musashi, used by Eliezer on at least one occasion in the sequences.
Avoiding doing what the enemy wants is mere parrying. Stop mere parrying, and cut.
We would first have to agree on what "cutting the enemy" would actually mean. I think liberal response would be keeping our society inclusive, secular and multicultural at all costs. If that is the case than avoiding certain failure modes like becoming intolerant militaristic societies and starting unnecessary wars could be considered as successful cuts against potential worse world-states.
Now that is liberal perspective, there are alternatives, off course.