dude it's not that easy, and who is they? Any forced removal or defeat in a war is catastrophic, consider the nuclear program is eliminated for good, missile program is eliminated for good, oil and gas sold off to western corps, and the gold reserves will suddenly disappear. The west wont replace this current regime with an independent and strong regime, you'll get another weak federal decentralized gov like in Iraq or Syria, with several autonomous region at best if not total balkanization. The West wants weak dependent subservient puppet states without regional ambitions, to use and abuse at will.
Only way a regime change is successful is it comes from within, but the institutions must slowly transition and not immediately disbanded.
A superpower like the Soviet Union couldn’t handle a shock and awe type of system change, not many countries can.