That was, of course, a reference to Washington Post columnist Jamal Khashoggi, who was apparently murdered by Saudi officials, Turkish intelligence has suggested.
"I have long been troubled by the nature of the relationship between the U.S. and Saudi Arabia," Sanders said in a video posted to Twitter.
"And in light of the likely Saudi murder of critic Jamal Khashoggi, I think it is time for us to thoroughly re-evaluate that relationship.
Later in the video Sanders added, "We cannot have an ally who murders in cold blood, in their own consulate, a critic, a dissident.
Much of the video from Sanders also focused on the ongoing crisis in Yemen.
Sanders further suggested that the U.S. should be throwing its full weight behind the Saudis when it comes to their long-running tensions with Iran.
Later Thursday, Trump said it seemed like Khashoggi had died and promised consequences should Saudi authorities be connected to the murder, via the Associated Press. »