The Dept of Justice report, By John Ashcroft, On Russian Organized Crime.
#1 threat
National Institute of Justice


Russian organized crime, or what has been generically referred to (inappropriately in our view) as the Russian Mafia
In the United States, the
label “Russian” actually refers to a variety of Eurasian crime groups. These
include Armenians, Ukrainians, Lithuanians, and persons from the Caucasus
region of the former Soviet Union (e.g., Chechens, Dagestanis, Georgians). It
is estimated that some 12 to 15 loosely categorized criminal groups that have
international ties to Russia or other former Soviet republics are currently
operating in the United States. These groups, which we will also conveniently
label Russian organized crime, together have some 500 to 600 members.


https://www.ncjrs.gov/pdffiles1/nij/187085.pdf