Lithuania’s Special Investigation Service has arrested Rimantas Šidlauskas, the country’s former ambassador to the Russian Federation. The Lithuanian news outlet Delfi reported that the diplomat is suspected of “influence trading”: law enforcement agents believe that he promised to acquire a Schengen Zone visa for a Russian citizen in exchange for that individual’s efforts to “influence a particular group of people.” That Russian citizen may be Rinat Nasyrov, a co-owner of New Industrial…