On the one hand, Trump's showrunner Paul Manafort has a not-very-good ethical reputation, and his undisputed ties to the previous pro-Russian president of Ukraine (himself a corrupt sleazeball of the highest order) certainly lends at least some credence to the current charges coming out of the Ukraine, especially given all the other weirdness in the Trump/Russia, Trump/Putin dancing of late..
On the other hand, the current Ukrainian government is nothing to write home about in terms of its politics. If Manafort was associated with the previous regime, I don't automatically assume that charges made or evidence "uncovered" by the new regime should be taken at face value. Caveat emptor. I'd just as soon focus on corruption in and around Trump that's demonstrable, before we focus on what the Ukraine is alleging.
Manafort named in Ukrainian probe into secret cash
The New York Times published a report late Sunday alleging that millions in cash payments were designated for Paul Manafort by Ukrainian leaders during his time as a political consultant there.