Person A

Paul Manafort and Russian Intelligence are linked at the hip:

When Manafort first began to contemplate doing business on a grand scale in Russia and Ukraine, he faced a basic logistic challenge. He intended to operate in countries where mastery of English was not a prerequisite for the acquisition of wealth and power. ... So he grew reliant on Konstantin Kilimnik, a Soviet-born native who could render idiomatic English and translate the cultural nuances of the region that might elude outsiders. Manafort would describe him to others in his office as “my Russian brain.” For a decade, Kilimnik was a fixture in Manafort’s meetings with the region’s leading politicians and oligarchs.

After so much time spent in close quarters, the relationship between the two became trusting and deep. By 2011, Kilimnik had taken over Manafort’s office in Kiev. This made Kilimnik the primary interface for Manafort’s lone client, a corrupt clique of former gangsters that ruled Ukraine under the banner of their political organization, the Party of Regions.

...For more than two decades, Konstantin Kilimnik, known familiarly as Kostya and K.K., has worked for Americans, the bulk of his time with Manafort. During that entire period, he has been dogged by suspicions. There were always hints that he might be serving another master, providing a set of surveilling eyes for Russian intelligence. One of his former colleagues, Michael Getto, told me, “From my standpoint, I kept my distance from Kostya, because I knew there was a better-than-even chance that he was connected to people I didn’t want to be.” These insinuations were never backed by more than a smattering of circumstantial evidence. They were never enough to deter State Department officials from grabbing the occasional gossipy drink with him—although one diplomat, casting a backwards glance over the course of his dealings with Kilimnik, told me, “He has excellent tradecraft.”