Gwyneth Paltrow reacts to 'Iron Man' co-star Robert Downey Jr's return as Doctor Doom in 'Avengers: Doomsday'

‘Avengers: Doomsday’ will be directed by the Russo Brothers, who previously directed Downey as Iron Man in ‘Captain America: Civil War’, ‘Avengers: Infinity War’, and ‘Avengers: Endgame’