As usual Trump is right and also at the core of the supposed Mule team investigation which appears to be looking at everything except what it was supposed to do.
He has to have a scalp on the wall to frighten others into flipping on anything he can remotely tie to collusion.... Hence his move on Manafort , who I don’t think was going to flee the country and without seeing ultimate details more than likely didn’t overly influence a testifier any more than the Rats routinely get away with.
Manafort is a complex situation I really don’t know all there is to know about his exploits.