Sun-tse

Spread disunity and dispute among the citizens of the enemy's country. Turn the young against the old. Use every means to destroy their arms, their supplies, and the discipline of the enemy's forces.
Debase old traditions and accepted gods. Be generous with promises and rewards to purchase intelligence and accomplices. Send out your secret agents in all directions. Do not skimp with money or with promises, for they yield a high return.

The Art of War