Sweden also has has bilateral customs agreements with Germany, United Kingdom, The Netherlands, France, Finland, Denmark, Norway, Iceland, Spain, Poland, Russia, Estonia, Lithuania, Hungary, Latvia, and the Czech Republic. In 1997, a similar agreement with Slovakia was ratified. Sweden cooperates with the United States under a 1961 Extradition Treaty and a 1983 Supplementary Extradition Treaty. Law Enforcement Efforts . Swedish law enforcement authorities are effective.
Corruption is very rare, and when discovered, consistently punished.
Anti-corruption laws effectively deter public officials from engaging in the illicit production or distribution of drugs, and in the laundering of drug money. No illicit drugs are known to be cultivated or produced in significant amounts in Sweden. Foreign labs have efficient distribution systems in Sweden. Police attribute this to tight controls on precursor chemicals and, mainly, to a relatively low street price for amphetamines and other drugs. It is more profitable for criminals to smuggle drugs into Sweden than to produce them in Sweden in clandestine labs.