Everything in strategy is very simple, but that does not mean everything is very easy.
Carl von ClausewitzIf the enemy is to be coerced, you must put him in a situation that is even more unpleasant than the sacrifice you call on him to make. The hardships of the situation must not be merely transient - at least not in appearance. Otherwise, the enemy would not give in, but would wait for things to improve.
Carl von Clausewitz