What destabilization are you speaking of? What we are seeing today? Saddam was someway able to keep the other ME countries in check? Maybe I am wrong but the current humanitarian crisis didn't originate in Iraq or Iran. And what good was there to Iran and Iraq having a war every few years? All his neighbors were glad to see the butcher of Baghdad gone. He was a threat.
Iraq has essentially disintegrated with Saddam's demise and is now occupied by any number of terrorist groups and largely under control of Iran, Iran-backed influencers, or both.
Iraq & Syria have essentially become a borderless, lawless version of the Wild West.
Millions are fleeing the chaos and butchery, creating a massive problem for Europeans.
It doesn't appear that anything is going to either stop or slow this down any time soon.
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