A 28-year-old American citizen, known only as K. Byers, was detained at Moscow's Vnukovo Airport after customs found cannabis-laced marmalade in his luggage. He faces up to seven years for smuggling narcotics, as Russian officials reported he attempted to bring in a significant amount of cannabis-derived products. The incident occurred shortly after a U.S.-Russia prisoner swap, described by the White House as a diplomatic thaw. This case reflects ongoing tensions between the two countries, as Americans, like Marc Fogel and Brittney Griner, have faced similar charges in the past, amid broader geopolitical conflicts.