That article also puts a spotlight on little-noticed Senate testimony this week from Bill Browder, the financier who hired Russian attorney and whistleblower Sergei Magnitsky to look into Russian corruption.

Magnitsky was ultimately arrested by Russian officials and died in custody. (A Russian lawyer investigating Magnitsky's death later took a mysterious fall from a fourth-floor window, but survived.) The 2012 Russia sanctions law that bears Magnitsky's name and was enacted by Congress in response to his death is also at the heart of the highly scrutinized meeting that took place last year between Kremlin-linked lawyer Natalia Veselnitskaya, Don Jr., and Trump's top campaign brass, Jared Kushner and Paul Manafort. Vladimir Putin wants those sanctions lifted and Browder said he was certain that Russian intelligence officials would have known about that meeting and monitored it.