Increasingly, destabilisation, if not regime change, has emerged as the subtext of the Middle East's multiple conflicts.
The notion that civil wars, ethnic insurgencies, sectarianism, and social unrest can, at least, weaken hostile adversaries, if not produce more friendly regimes, complicates prospects for negotiated solutions and, in some cases, thwarts diplomacy, heightens the risk of prolonged wars, and turns disputes into existential conflicts.
Middle Eastern governments and external powers, like the United States, did not only recently discover destabilisation and regime change as a possible strategy. It's that notions of destabilisation and regime change have moved centre stage.