Law & Order S15E10 - Enemy

In the bloody wake of a massacre of heroin dealers, Detectives Fontana and Green track through a list of international criminals until they target their primary suspect, a drug-dealing Afghan warlord (as Khaleel, Christopher Maher) who's aided U.S. forces in Afghanistan and claims diplomatic immunity. But EADA McCoy and ADA Southerlyn fearlessly prosecute despite State Department pressure and a defense lawyer who claims his Afghan client was forced to push drugs in order to maintain his cover, and ultimately continue to aid American military efforts.