"Siege" is an
American comic book published by
Marvel Comics from January 2010 to May 2010. It deals with the culmination of the
Dark Reign storyline which saw
Norman Osborn become the United States primary defense officer, leading H.A.M.M.E.R and employing his own evil
Avengers. The story depicted
Loki manipulating Osborn into leading an all-out assault on
Asgard, at the time located within the United States.
Captain America and his own
Avengers lead a rebellion against Osborn which escalated to an all-out assault. The events in
Siege led to Marvel Comics introducing the subsequent storyline,
Heroic Age.