I should therefore prefer to restrict my guidelines to the following: Don't believe that military interventions, no matter how morally justified, can succeed without clear military goals. Don't fall into the trap of imagining that the West can remake societies. Don't take public opinion for granted – but don't either underrate the degree to which good people will endure sacrifices for a worthwhile cause. Don't allow tyrants and aggressors to get away with it. And when you fight – fight to win.

Don't believe that military interventions, no matter how morally justified, can succeed without clear military goals - Statecraft: Strategies for a Changing World