Donald Trump. Photo: Mark Wilson/Getty Images

This evening, the United States carried out a missile strike against Syria, killing a reported 100 people. Dozens of missiles were fired as retaliation for a chemical attacked levied by the Syrian government earlier this week, and Twitter, as it tends to do in cases of breaking news, came alive with commentary and criticism. The most widely cited critic? This guy:

AGAIN, TO OUR VERY FOOLISH LEADER, DO NOT ATTACK SYRIA - IF YOU DO MANY VERY BAD THINGS WILL HAPPEN & FROM THAT FIGHT THE U.S. GETS NOTHING! — Donald J. Trump (@realDonaldTrump) September 5, 2013

That’s just the most forceful piece of unrequested advice President Trump tweeted at President Obama back in 2013, warning him not to intervene in Syria. Here he is demanding Obama get congressional approval for strikes — something Trump decidedly did not do. I hope the White House lawyers have a lot of coffee on hand!

The President must get Congressional approval before attacking Syria-big mistake if he does not! — Donald J. Trump (@realDonaldTrump) August 30, 2013

Trump’s not the only conservative having a little trouble with his Twitter archive — here’s Sean Hannity. In 2013!

Glad our arrogant Pres. is enjoying his taxpayer funded golf outing after announcing the US should take military action against Syria — Sean Hannity (@seanhannity) September 4, 2013

Looking for a little insight into Donald Trump’s thinking on the political expediency of military action? Look no further!

Now that Obama’s poll numbers are in tailspin – watch for him to launch a strike in Libya or Iran. He is desperate. — Donald J. Trump (@realDonaldTrump) October 9, 2012

It’s fair to ask if it matters that, three and a half years ago, the president stridently held a completely opposite opinion from the one that led him to launch a collection of Tomahawk missiles. (The New York Times notes the attack marks a sharp turn from earlier comments, implying that the administration was still considering other, less aggressive, options — so three and a half years is generous.) Given that Trump’s alleged noninterventionism was an oft-stated reason to vote for him, it feels more than fair to point out what a complete reverse the new policy implies. Just ask Green Party candidate Jill Stein:

Hillary Clinton's foreign policy is much scarier than Donald Trump's, who does not want to go to war with Russia. #PeaceOffensive — Dr. Jill Stein🌻 (@DrJillStein) October 14, 2016

Below is just a sampling of all the times Trump tweeted in opposition to military intervention in Syria three years ago. (Seriously, search Twitter for all his tweets containing the word “Syria” — the list goes on and on. This was an issue he cared about.) We’ve written before about the pleasure you can derive from reading old @RealDonaldTrump tweets and reminding yourself of the era when he was just a heckling citizen, thanks to the indexed permanence of social media. But when he’s a few feet away from the nuclear football — and as it becomes clear how easily his mind can change — the extent of the gap between the seriousness of his actions and the frivolousness of his rhetoric seems a lot less funny, and a lot more terrifying.

Obama must now start focusing on OUR COUNTRY, jobs, healthcare and all of our many problems. Forget Syria and make America great again! — Donald J. Trump (@realDonaldTrump) September 11, 2013

We should stop talking, stay out of Syria and other countries that hate us, rebuild our own country and make it strong and great again-USA! — Donald J. Trump (@realDonaldTrump) September 13, 2013

President Obama, do not attack Syria. There is no upside and tremendous downside. Save your "powder" for another (and more important) day! — Donald J. Trump (@realDonaldTrump) September 7, 2013

For all of those fools that want to attack Syria, the U.S.has lost the vital element of surprise-so stupid-could be a disaster! — Donald J. Trump (@realDonaldTrump) September 4, 2013

Think of it, the Arab League doesn't want to get involved with Syria - but they want us to do their dirty work. How stupid! — Donald J. Trump (@realDonaldTrump) September 3, 2013