On Pearl Harbor Day (December 7th, I hope I don't have to remind you), tell your liberal neighbor that the answer to Islamist terror is the same as it was to defeating crazy-eyed Japanese militarism.
"You don't mean..." and before he can get the words out, just say, "Uh-huh," and keep him guessing.

Psalms 118:8 It is better to trust in the LORD than to put confidence in man.
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Scarlet Chord Ministries   Isa 1:18