Trump said ‘we must abandon the failed policy of nation building and regime change’ in 2016. So what changed?

Barely an hour after the first U.S. and Israeli missiles struck Iran, President Donald Trump made clear he hoped for regime change. “Now is the time to seize control of your destiny,” he told the Iranian people in a video. “This is the moment for action. Do not let it pass.”

Doesn’t sound complicated. After all, with Iran’s fundamentally unpopular government weakened by fierce airstrikes, some of its top leaders dead or missing and Washington signaling support, how hard could it be to overthrow a repressive regime?

Possibly very hard. So says history.

Washington has a long, complicated past when it comes to regime change. There was Vietnam in the 1960s and 70s, and Panama in 1989. There was Nicaragua in the 1980s, Iraq and Afghanistan in the years after 9/11, and Venezuela just weeks ago.

There was also Iran. In 1953, the CIA helped engineer a coup that toppled Iran’s democratically elected leader and gave near-absolute power to Shah Mohammad Reza Pahlavi. But as with the shah, who was overthrown in Iran’s 1979 Islamic Revolution after decades of increasingly unpopular rule, regime change rarely goes as planned.

Attempts to usher in U.S.-friendly governments often start with clear intentions, whether hope for democracy in Iraq or backing an anti-Communist leader in Congo at the Cold War’s height. But often those intentions stumble into a political quagmire where democratic dreams turn into civil war, once-compliant dictators become embarrassments and American soldiers return home in body bags.

That history has long been a Trump talking point. “We must abandon the failed policy of nation building and regime change,” he said in 2016.

“In the end, the so-called........

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