As Tony Stark (Robert Downey Jr.
) owns up to being Iron Man before the world press, Anton Vanko lies dying in Russia. Years ago, Anton worked with Tony's father to create a new source of energy. But greed got the best of Anton, and now as he slips away, his son, Ivan (Mickey Rourke
), vows to make Tony pay for the sins of his father. Meanwhile, Tony fends off efforts from smarmy Senator Stern (Garry Shandling
) and military weapons expert Justin Hammer (Sam Rockwell
) to get him to divulge the secrets of his powerful Iron Man suit. The powers that be are concerned that Tony's technology may fall into the wrong hands -- fears that are soon confirmed when the cocky billionaire entrepreneur is confronted in front of the entire world by Ivan, who has built his own weapon using stolen Stark blueprints. Later, as Lt. Rhodes (Don Cheadle
) wrestles with the decision to personally deliver Tony's suit to the military, Ivan finds an unlikely ally in the quest to destroy Iron Man; Stark Industries legal consultant Natalie Rushman (Scarlett Johansson
) reveals her connection to Nick Fury (Samuel L. Jackson
); and Pepper Potts (Gwyneth Paltrow
) takes on some new responsibilities.