Four years ago, after the Syrian government launched a brutal chemical attack on its own civilians, Donald Trump warned anyone who would listen that the US should refrain from launching retaliatory military strikes.
"[President Barack] Obama must now start focusing on OUR COUNTRY, jobs, healthcare and all of our many problems," he tweeted. "Forget Syria and make America great again!"
Two years ago Mr Trump built a winning presidential campaign around this very theme, sharply criticising Democrats and some fellow Republicans for what he viewed as their overly interventionist foreign policies.
Just a week ago Secretary of State Rex Tillerson appeared to be following this new script when he downplayed calls for Syrian President Bashar al-Assad's removal, saying his status "will be decided by the Syrian people" (BBC)