'You can be sure of succeeding in your attacks if you only att | OTAS: operational thinking against the state

"You can be sure of succeeding in your attacks if you only attack places which are undefended.
You can ensure the safety of your defense if you only hold positions that cannot be attacked.
Hence that general is skillful in attack whose opponent does not know what to defend; and he is skillful in defense whose opponent does not know what to attack.
O divine art of subtlety and secrecy! Through you we learn to be invisible, through you inaudible; and hence we can hold the enemy's fate in our hands."—Sun Tzu, The Art of War