Italian gangs seem to have fairly limited power outside Italy. Camorra and Ndrangheta have a fairly strong presence in Germany, a bit of a presence in parts of France and Spain, and some lucrative alliances in the Balkans, but in all these areas they are less of an influence than Turkish/Kurdish/Albanian/Romanian/Russian gangs.
you forgot bikers, they are very strong in several european countries
anyway italian mafia is present in much more places that you says
in spain the mafias have more than a bit presence, they're very strong
same in south france
in switzerland and germany ndrangheta is the strongest group according to local police chiefs
in belgium is very strong too
although turks have a huge presence because of diaspora, i dont' think they are so organized like you claim, they are mostly involved in low-level crimes
cocaine, marijuana and MD are the biggest business concerning drugs in europe today, heroin is almost dead
definitively i think italian mafia, bikers, russians and albanians are the most powerful groups in europe today
followed by chineses, they are everywhere in europe and allthough not involved in drugs, weapons they are involved stongly in legit crimes
