ISIS on the offensive in Iraq

[Seamus Fermanagh]

Another way of doing it is to do as the British did after the Indian Mutiny, taking exceptionally harsh measures against the active perpetrators (eg. blowing ringleaders from cannon), before re-adjusting to old pre-British power structures with the British on top, and visibly on top. Imperialism, in other words.

A variation on my second choice. You stayed long enough to change the culture substantially. Caste system largely broken; significant respect for rule of law developed; some belief in democratic institutions. Still too much graft, but not a bad culture shift for roughly one century.