Questions about the connections between President Donald Trump’s world and Russia continue to mount, with the near-daily release of information that appears to expand the scope of these links.

The most intense scrutiny has so far revolved around a few central characters with ties to Trump and his presidential campaign. Some of these individuals have been named in an ongoing investigation by U.S. intelligence and law enforcement agencies into potential collusion between Trump’s campaign and Russian-directed hacking efforts around the presidential election. The probe has reportedly turned up no evidence of wrongdoing.