Most of the leading crime gangs in europe and worldwide are Albanian [0]. They are a global operation thats present in almost every country thats relevant to the drug trade, and thats as a result of their massive diaspora (something like 30%-40% of their whole population has fled albania since the 80s). VICE declared Albania as the first and only european narco-state.[1] I actually have a friend who worked for the UN researching the narco economy in Albania, and the conclusion was that the GDP of the drug trade was half the GDP of the whole country [2]. In 2014 there was an incident where Dutch tourists that were hiking the mountains there accidentally discovered endless cannabis plantations and posted it on YouTube after leaving the country. This prompted wide outrage everywhere in Europe, and hence the Albanian government had to do something to save face, and they burned all the crops there in the region.[3] The thing is, the government and the narcos are all the same. Albania is still the major exporter of cannabis across Europe, and Albania is still the reigning king of drug transport. The Italian mafia is closely associated and probably dwarfed by the Albanian mafia.
[0] https://en.wikipedia.org/wiki/Albanian_mafia
[1] https://www.vice.com/en/article/the-inside-story-of-europes-...
[2] https://www.the-independent.com/news/world/europe/albania-dr...
[3] https://en.wikipedia.org/wiki/2014_Lazarat_drug_raid