Colonel Nicholas Joseph “Nick” Fury is a leading agent of the fictional espionage agency S.H.I.E.L.D. The character makes frequent appearances in Marvel books as the former head of S.H.I.E.L.D. and as an intermediary between the U.S. government or the United Nations and various superheroes.
With no more Nick Fury there is no SHIELD to protect Tony Stark AKA Iron Man