Who is Alex van der Zwann?
It seems he "facilitated" Manaforts' Ukrainian adventure.
Mueller has charged him with the usual: lying to the Special Counsel's Office.

https://www.reuters.com/article/us-u...-idUSKCN1G41YM

Interesting. The people who have anything to hide likely already know what he knows.
Thumb screws are not needed when you can bring continuous pressure.