All warfare is based on deception.-- Sun Tzu, the Art of War
When able to attack, we must seem unable; when using our forces, we must seem inactive; when we are near, we must make the enemy believe we are far away; when far away, we must make him believe we are near.
Hold out baits to entice the enemy.
Feign disorder, and crush him.
To know your enemy, you must become your enemy.