These are the 11 rich countries with the biggest organised-crime problems

Corruption score: 5.1

France ranks worse than other large EU countries like Spain, the UK, and Germany. Its Corsican mafia was once heavily involved in the trafficking of heroin into the US, referred to as "the French Connection."

Corruption score: 5.1

Israel saw a spike in mafia activity from Russia as it encouraged the immigration from the country after the fall of the Soviet Union. Important figures like Zeev Rosenstein and Itzhak Abergil have been extradited to the US.

Corruption score: 5.0

Organised crime is becoming more prevalent in Germany. There is also concern that gangs are targeting the country's new influx of migrants, and recruiting young males as drug dealers and runners.

Corruption score: 4.9

Gangs known as "Kkangpae" operate in South Korea. Like Japan's Yakuza, they also often have tattoos that identify their affiliation.

Corruption score: 4.9

Despite its wealth, the US is placed roughly in the middle of the global rankings for organised crime, in 70th place.

Corruption score: 4.9

Slovakia is the second-worst ranked country in Europe for organised crime. Three lists of organised-crime associates and groups have been leaked in the country. It ranks at 74th place, exactly halfway down the ranks.

Corruption score: 4.8

As a gateway into Europe, Turkey is a predictable route for drug trafficking from the east, which the Turkish mafia takes advantage of. Turkish organised criminals also have a presence in London, and the country takes 77th place.

Corruption score: 4.6

Like many other countries under former communist systems, Hungary experienced a surge in organised crime in the 1990s, as gangs sought to capitalise on the lack of order and the sudden emergence of massive commercial activity.

Corruption score: 3.5

Italy, the symbolic home of the Mafia, is by far the worst-ranking EU country for organised crime, coming in 122nd place of 138.

Corruption score: 2.6

Powerful and violent cartels have brought Mexico to the edge of civil war.Only Honduras, Venezuela, and El Salvador fare worse than the country in the security index.