ISS Forecast: "Tekneecal Deeficulties, Tovarish."

NASA has broken off all contacts with the Russians that don't directly involve operation of the International Space Station.

I'd look for some subtle forms of Russian retaliation. Maybe a scientific cargo that NASA wants to fly is "inadvertently" left out of the next Progress cargo flight. Or the per-seat cost for a Soyuz ride gets some Spirit-Air-type add-ons ("You vant oxygen on flight, Comrade? Is extra cost.")