" Generally in war the best policy is to take a state intact; to ruin it is inferior to this. To capture the enemy's army is better than to destroy it; to take intact a battalion, a company or a five-man squad is better than to destroy them. For to win one hundred victories in one hundred battles is not the acme of skill. To subdue the enemy without fighting is the acme of skill.

Thus, what is of supreme importance in war is to attack the enemy's strategy. Next best is to disrupt his alliances; do not allow your enemies to get together. The next best is to attack his army. If you cannot nip his plans in the bud, or disrupt his alliances when they are about to be consummated, sharpen your weapons to gain the victory. "

― Sun Tzu , The Art of War