Question: David Berman was a partner with what mobster who was a driving force behind the development of the Las Vegas Strip?

Context paragraphs:
Guy F. Tozzoli: Guy Frederick Tozzoli (February 12, 1922, North Bergen, New Jersey – February 2, 2013, Myrtle Beach, South Carolina) was director of the World Trade Department of the Port of New York Authority in the 1960s.  As such he was the driving force behind the development of the World Trade Center.  Tozzoli was also a founder of the World Trade Centers Association, which fostered the development and operation of World Trade Centers globally.  Tozzoli was the driving force from New York City, while his business associates Soichiro Honda and Paul Fabry led the WTC effort in Tokyo and New Orleans respectively.  Tozzoli graduated from Fordham University and later served his country as a lieutenant in World War II and the Korean War.  Tozzoli was credited for hiring Minoru Yamasaki to design the World Trade Center complex which was dedicated in April, 1973.  Tozzoli retired as Director of the World Trade Department for the Port Authority in 1987, but remained as president of the World Trade Centers Association until January 2011.

Cohen crime family: The Cohen crime family, or the Siegel crime syndicate, was an Italian-American Mafia / Jewish Mafia crime family created by New York Jewish American mobster Benjamin "Bugsy" Siegel in the early 1930s.  Siegel ran Los Angeles and later Las Vegas' illegal gambling and prostitution rings with his lieutenants Mickey Cohen, David Berman, Harold "Hooky" Rothman, Moe Sedway and boss of the L.A. family Jack Dragna.

CityCenter: CityCenter (also known as CityCenter Las Vegas) is a 16797000 sqft mixed-use, urban complex on 76 acre located on the Las Vegas Strip in Paradise, Nevada.  The project was started by MGM Resorts International; Dubai World became a joint partner during the project's construction phase.  It is the largest privately funded construction project in the history of the United States.  The project is connected by a people mover system to adjacent MGM properties Monte Carlo Las Vegas and Bellagio Las Vegas.  As of 2015, the "CityCenter" branding has been largely retired, with the focus instead on the Aria brand of the development's centerpiece property in names such as the "Aria Express" (formerly "CityCenter Tram") and "Aria Art Collection" (formerly "CityCenter Art Collection").

Bugsy Siegel: Benjamin "Bugsy" Siegel (February 28, 1906 – June 20, 1947) was a Jewish American mobster.  Siegel was known as one of the most "infamous and feared gangsters of his day".  Described as handsome and charismatic, he became one of the first front-page celebrity gangsters.  He was also a driving force behind the development of the Las Vegas Strip.  Siegel was not only influential within the Jewish mob but, like his friend and fellow gangster Meyer Lansky, he also held significant influence within the Italian-American Mafia and the largely Italian-Jewish National Crime Syndicate.

Naked City Las Vegas: Naked City is a neighborhood located in Las Vegas, Nevada north of the Las Vegas Strip The neighborhood is located at the northern end of the Las Vegas Strip, near the intersection of Las Vegas Boulevard and Sahara Avenue.  Due to the lack of commitment to updating the neighborhood, Naked City went from a modern neighborhood to a run down area full of poverty.  Naked City has been known to be one of the most dangerous neighborhoods in Las Vegas.

Downtown Las Vegas: Downtown Las Vegas (commonly abbreviated as DTLV) is the central business district and historic center of Las Vegas, Nevada.  It is the original townsite and was the gambling district of Las Vegas prior to the Strip, and the area still incorporates downtown gaming.  As the urban core of the Las Vegas Valley, it features a variety of hotel and business highrises, cultural centers, historical buildings and government institutions, as well as residential and retail developments.  Downtown is located in the center of the Las Vegas Valley and just north of the Las Vegas Strip, centered on Fremont Street, the Fremont Street Experience and Fremont East.  The city defines the area as bounded by I-15 on the west, Washington Avenue on the north, Maryland Parkway on the east and Sahara Avenue on the south.

Las Vegas Strip: The Las Vegas Strip is a stretch of South Las Vegas Boulevard in Clark County, Nevada, known for its concentration of resort hotels and casinos.  The Strip is approximately 4.2 mi in length, located immediately south of the Las Vegas city limits in the unincorporated towns of Paradise and Winchester.  However, the Strip is often referred to as being in Las Vegas.  Most of the Strip has been designated an All-American Road, and is considered a scenic route at night.

Trump International Hotel Las Vegas: The Trump International Hotel Las Vegas is a 64-story luxury hotel, condominium, and timeshare located on Fashion Show Drive near Las Vegas Boulevard, just off the Las Vegas Strip in Paradise, Nevada, named for real estate developer and the 45th and current President of the United States Donald Trump.  It is located across the street from Wynn Las Vegas, behind Alon Las Vegas on 3.46 acre , near the Fashion Show Mall, and features both non-residential hotel condominiums and residential condominiums.  The exterior glass is infused with gold.  The hotel is a member of The Leading Hotels of the World.

Easy Street (book): Easy Street: The True Story of a Mob Family (1981) is the first memoir of Susan Berman, daughter of Las Vegas mobster David Berman.  In it, Berman chronicles her mother Gladys's and her own obliviousness to what went on around them.  When they finally became aware of their Mafia family, Berman's mother ended up dying in a mental institution and Susan endured a lot of psychotherapy.

David Berman (mobster): David Berman (1903–1957), nicknamed "Davie the Jew", was a Jewish-American organized crime figure in Iowa, New York City, Minneapolis, and Las Vegas.  He was one of the pioneers of gambling in Las Vegas, where he was a partner with flamboyant mobster Bugsy Siegel at the Flamingo Hotel.  Berman died a non-violent death in 1957 during surgery.

Supporting paragraphs: David Berman (mobster) Bugsy Siegel
Answer: Benjamin "Bugsy" Siegel