Prosecutor in charge of reviewing Russia probe known for tough interrogation techniques

The man leading the inquiry into the origins of the Russia probe, John Durham,

the U.S. attorney for Connecticut, is no stranger to politically sensitive investigations.

In his 41-year career as a prosecutor, John Durham, the U.S. attorney for Connecticut, has led investigations into the FBI's cozy relationship with Boston mobsters such as James "Whitey" Bulger and the CIA's use of tough interrogation techniques on terrorism suspects.