We have to remain vigilant. But I strongly believe our leadership and our security cannot depend on our military alone. As Commander-in-Chief, I have used force when needed to protect the American people, and I will never hesitate to do so as long as I hold this office. But I will not send our troops into harm's way unless it's truly necessary; nor will I allow our sons and daughters to be mired in open-ended conflicts. We must fight the battles that need to be fought, not those that terrorists prefer from us - large-scale deployments that drain our strength and may ultimately feed extremism.