Sometimes going to war before all alternatives are exhausted is the most moral action. For example, a nation might decide to go to war if it determines that waiting would enable to the enemy to increase its strength and to do much more damage than an early war would have inflicted. This, after all, is the bitter lesson of the failure of appeasement in the 1930s. Waiting might allow an invading state to entrench itself so that far greater force would be necessary to remove it at a later date.