The mission in Vienna represents Swiss interests and positions at the United Nations Office on Drugs and Crime (UNODC). The UN organization fights (transnational) organized crime, human trafficking, the illicit trade in drugs and weapons and money laundering, as well as related corrupt practices and international terrorism.

At UNODC, Switzerland focuses in particular on combating corruption, promoting a health- and human rights-based drug policy, combating human trafficking and plays an active role in the development of a new convention against cybercrime. 

Switzerland is a member of the Commission on Narcotic Drugs and the ad hoc committee for the development of an international convention against cybercrime. In this capacity, Ambassador Nägeli has been involved in a process to determine the implementation mechanism of the future convention.