Scarlett Johansson recently interviewed with EW, and discussed her role in Captain America: Civil War.
On Natasha’s arc in Civil War: “I don’t think she’s ever aspired to become an Avenger. That’s not really a choice that she made. It’s kind of like the events in her life led her to that point and when we see her [in Civil War], she’s finally capable of making a choice for herself. Which is kind of a milestone in someone’s life when they’ve not really participated in the decisions that were made for them. She’s finally at a place where she’s going, ‘Okay, I actually kind of know what I want. And I think I kind of deserve it.’…Unfortunately the events that took place … she has this kind of greater calling and this huge pull towards doing what’s right for the greater good. And she chooses that, and it’s a really heroic thing that she does, I think.”
On being torn between Ironman and Captain America: “I think when you find her inCivil War, she’s looking to strategize her position, putting herself in a place where she is able to let the powers that be fight it out or whatever amongst themselves. She’s always a little bit on the perimeter so she can have a better perspective of what’s really going on.”