If one rejects laissez faire on account of mans fallibility and moral weakness, one must for the same reason also reject every kind of government action.
Ludwig von MisesThe goal of liberalism is the peaceful cooperation of all men. It aims at peace among nations too. When there is private ownership of the means of production everywhere and when laws, the tribunals and the administration treat foreigners and citizens on equal terms, it is of little importance where a country's frontiers are drawn... War no longer pays; there is no motive for aggression... All nations can coexist peacefully.
Ludwig von Mises