He's going after those who turned on him with his double agent Mueller. All four could possibly be foreign agents. Bad optics to expose so many foreign actors close to you. Not sure how will go down but it's theater to our benefit if we are handling this way.
Corsi(Ignored and misdirected Loop Capital digs early on, exposed his loyalties, tried to mislead Q followers on a number of occasions, not smart).
Stone (NXIVM connections, threatened Trump on Twitter, Rumor is MOS).
Manafort(Manafort was placed in the campaign, per Q; Kremlin ally hired him to clean up Yanukovich and get him elected, even moved onto his property, he got him elected and Yanukovich quickly signed a multi-year economic deal with Russia, NATO then spurred the Maidan protests to counter and Ukraine has been a shitshow since.)
Cohen(Ukraine/Russian mafia connections, and a plethora of other misdeeds anons are well aware of).
Can't wait for Kellyanne's turn.