A new international trailer for Zombieland-director Ruben Fleischer's Gangster Squad has gone online.  While it's a shorter, tighter cut of the previously released trailer, the new version does feature a few seconds of new footage.  Sean Penn stars as Mickey Cohen, a New York gangster who takes his criminal enterprise to Los Angeles.  Standing in his way are Sgt. John O'Mara (Josh Brolin) and Jerry Wooters (Ryan Gosling), who are tasked with disrupting Cohen's stranglehold under the orders of Bill Parker (Nick Nolte).  Gangster Squad also stars Emma Stone, Giovanni Ribisi, Anthony Mackie, Mireille Enos, Frank Grillo and Michael Pena. The film opens September 7th.  Hit the jump to check out the new trailer.Check out the new international trailer for Fleischer's Gangster Squad after the official synopsis below:

Los Angeles, 1949. Ruthless, Brooklyn-born mob king Mickey Cohen (Sean Penn) runs the show in this town, reaping the ill-gotten gains from the drugs, the guns, the prostitutes and--if he has his way--every wire bet placed west of Chicago. And he does it all with the protection of not only his own paid goons, but also the police and the politicians who are under his control. It's enough to intimidate even the bravest, street-hardened cop...except, perhaps, for the small, secret crew of LAPD outsiders led by Sgt. John O'Mara (Josh Brolin) and Jerry Wooters (Ryan Gosling), who come together to try to tear Cohen's world apart. "Gangster Squad" is a colorful retelling of events surrounding the LAPD's efforts to take back their nascent city from one of the most dangerous mafia bosses of all time.