A notorious Canadian case provides a useful precedent: Russian drink-driving diplomat goes on trial in Moscow and Russian drink-driving diplomat convicted of involuntary manslaughter

At the time of the incident, the Ottawa police could do nothing to collect evidence against the accused -- even take a breathalyzer test -- because he invoked diplomatic immunity. Fortunately, the then Russian government wished to retain a working relationship with Canada, so the accused was dismissed from the diplomatic service, charged under Russian law, tried, and convicted.