Re: Robert Redford offically joins Cap:TWS
Given the MCU's apparent tendency to downplay or avoid nationalistic bad guys (Skull's pseudo-Nazis, Western-originated Mandarin), what if Winter Soldier isn't controlled by Russians? Maybe he's even controlled by the US (or a rogue US agency)? And this is how RR's character encountered him.
I wonder if the Roxxon corporation will be involved. It's been shown in the MCU, and it does play a minor tangential role in the WS comic (Lukin uses a CC to buy it).