On a Monday evening last month, in the waning hours of her daylong deposition in the House impeachment inquiry, Fiona Hill addressed the conspiracy theories that swirled around her tenure as President Donald Trump’s adviser on Russia and Europe.

Hill recalled accusations, spread on the far-right website InfoWars, that she was a “mole” planted by the Democratic mega-donor George Soros. With the impeachment inquiry picking up, Hill testified that she was now “out on InfoWars again.”