Destroying their ability or willingness to make war. Doesn't need to be occupation, but if they can still fight, you haven't won yet. And destroying cities usua

Destroying their ability or willingness to make war. Doesn't need to be occupation, but if they can still fight, you haven't won yet. And destroying cities usually doesn't do much for stopping them from fighting. It mostly just makes them want to fight harder. The US lost the Vietnam War because we lost the willingness to fight. We can't effectively end the Afghanistan war because we can neither keep them from fighting, nor keep them from wanting to fight.