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Paul Manafort’s cooperation with the Mueller probe has collapsed. In a Monday filing, the special counsel’s office said he repeatedly lied to federal investigators, nullifying the plea agreement and exposing him to new charges.

Not soon after, news stories broke reporting that Manafort had met with Julian Assange in 2016, that a meeting between Manafort and Ecuador’s then-president was under scrutiny by Mueller, and that Manafort’s lawyer was briefing Trump’s attorneys. All this comes as the investigation appears to be reaching a crescendo. What does Mueller know? What did Manafort lie about? And what will President Trump do next?

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