Budapest

"Just like Budapest, all over again." "You and I remember Budapest very differently."

- Black Widow and Hawkeye

Budapest is the capital and largest city of Hungary.

Cold War
Nick Fury, a member of the CIA, and his direct subordinate Escobar travelled to Budapest during the last years of the, in a mission to retrieve a case containing full dossiers of at least twelve undercover CIA operatives in Soviet territories.

Fury and Escobar attended a nightclub, where Fury interrogated a man to know the whereabouts of the dossiers by the time Escobar finished his drink. While they were exiting the club, a man named Vinorovsky threatened Fury, and Escobar witnessed how Fury disabled him with a hit to the throat.

Fury's status as a wanted man prompted Escobar to ask about the goal of the mission, as he could end up completing it alone, and Fury informed him of the nature of the dossiers, with Escobar noting its value to the Soviet government.

Arriving at the direction Fury obtained, Escobar went to find the briefcase while Fury fought against its owner, a man named Verliecki. Fury defeated Verliecki, but Escobar betrayed him, holding him at gunpoint in order to sell the case to the Soviets. Fury seized an opportunity as Escobar was explaining his plans for the money, to catch him off-guard. They both struggled, and Escobar was able to hold Fury at gunpoint again, only to be knocked out by Verliecki, who turned out to be one of Fury's contacts.

It turned out that the whole mission was orchestrated to discover Escobar's true affiliation and turn him out as a mole, and the case was actually filled with cigars. Escobar was given a CIA identification with his photograph, but Nick Fury's name written on it, to be framed of Fury's previous actions in soviet territory.

The soviet authorities, attracted by the gunshots, found Escobar unconscious and tied to a chair by Verliecki, while Fury contacted Dum Dum Dugan and informed him about the outcome of the mission. Fury asked Dugan to wait for him to begin the celebration, as he was going to bring the cigars.

Budapest Operation
S.H.I.E.L.D. agents Natasha Romanoff and Clint Barton were sent on a mission to Budapest,. During the mission, they were involved in a situation that would later be remembered by Romanoff during the Battle of New York, as one of the fights she and Barton had against one of the Chitauri groups reminded her of Budapest, something Barton disagreed.

In an attempt to keep Black Widow from putting S.H.I.E.L.D.'s exploits on the internet, Alexander Pierce mentions that her time in Budapest would also be exposed.