"Claudia's plot on The Americans: A theory
Claudia is back. Be afraid. Be very afraid.
It's no secret that The Americans' Philip and Elizabeth are in a fragile place. (The camera has made that clear all season.) And at the intersection of all their conflicts between Philip and Elizabeth, and their respective relationships to Russia is Claudia.
That Margo Martindale is back given the rough history the Jenningses have with her character makes the Centre's configuration seem more opaque (and Elizabeth and Philip's relationship to it more brittle) than ever before. This is true for viewers too: Now that Arkady and Oleg are gone, we're basically blind to the Rezidentura's thinking. The one thing we do know is that Tatiana Ruslanova not known to be either cautious or moral, given her participation in the dangerous and controversial Department 12 is in charge. We also know that Claudia trusts the Jenningses less than Gabriel, their departed handler, did, and that the feeling is mutual.
I am worried. The wheat mission is starting to seem like a (cough cough) red herring, one intended to keep the spies busy. As our president might say, something is going on."
http://theweek.com/articles/694683/claudias-plot-americans-theory