It is one thing for colonies to blow up on the other side of the world. It is quite another if the colony is just next door, and the colonial power is surrounded by countries with limited sympathy for a mess that is largely of its own making.
殖民统治在世界另一头被推翻是一回事。但殖民地就在隔壁、殖民者被对其自己造成的混乱同情有限的国家包围是完全不同的另一回事。