Trump is Owned by Putin-Connected Russian Mob Bosses

This is what it all boils down to:

Human rights lawyer Scott Horton, whose work in the region goes back to defending Andrei Sakharov and other Soviet dissidents, has gone through a series of studies by the Financial Times to show how funds from Russian crime lords bailed Trump out after yet anther bankruptcy. The conclusions are stark:

Among the powerful facts that DNI missed were a series of very deep studies published in the [Financial Times] that examined the structure and history of several major Trump real estate projects from the last decade—the period after his seventh bankruptcy and the cancellation of all his bank lines of credit. ...

The money to build these projects flowed almost entirely from Russian sources. In other words, after his business crashed, Trump was floated and made to appear to operate a successful business enterprise through the infusion of hundreds in millions of cash from dark Russian sources.
He was their man.