The situation in Syria is an incredibly complicated one – and Trump's sudden decision to pull U.S. troops from northern Syria has left many people scratching their heads.
Here to try and unpick the confusion is John Oliver, who spent 20 minutes during Sunday's Last Week Tonight episode blasting Trump's recent behaviour – from his bizarre description of ISIS leader Abu Bakr al-Baghdadi's death to the way he's dealt with Turkey's President Erdoğan.
"I'm not saying that it is easy, or even possible, to get a situation this difficult completely right," says Oliver. "But it's genuinely hard to get it this wrong."
"We took a fundamentally stable situation, betrayed a strategically vital ally, and immensely damaged our reputation."
