As President Donald Trump floats "regime change" in Tehran, previous U.S. attempts to remake the Middle East by force in recent decades can offer stark warnings about the possibility of a deepening involvement in the Iran-Israeli conflict. Trump posted over the weekend: "If the current Iranian Regime is unable to MAKE IRAN GREAT AGAIN, why wouldn't there be a Regime change???" The White House insists Trump, who spent years railing against "forever wars," isn't doing an about-face and that Iranian citizens could revolt against its government. But that's a delicate, perilous path that other U.S. administrations have been down before. And it's a long way from Trump's dismissal of "stupid, endless wars."

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