In 1899, at the behest of the tsarist Okhrana, Azef returned to Moscow, working as an electrical engineer and making himself indispensable to the PSR. In 1903 he supplied the Okhrana with information which led to the arrest of Grigory Gershuni, head of the party's Combat Organization (its military branch), enabling Azef to succeed him (with Boris Savinkov as his deputy). In that position he organized assassinations including those of Vyacheslav Plehve (1904), the Tsar's uncle Grand Duke Sergius Alexandrovich (1905) and Father Gapon (1906). By 1908, Azef was playing the double role of a revolutionary assassin and police spy who received 1000 rubles a month from the authorities.
The Grand Duke Sergei was assassinated by a man in the pay the Tsarist secret police. Keep that in mind when you read this:
In what has been widely described in the media as the breakup of an “ISIS-inspired” plot, on April 2 the Department of Justice announced that Noelle Velentzas, 28, and Asia Siddiqui, 31, both of New York, had been arrested and charged with conspiracy to use a weapon of mass destruction. The defendants “plotted to wreak terror by creating explosive devices” for use in New York City and sought “bomb-making instructions and materials” for an attack, the Justice Department statement said.
Like other recent sensational “terror plots,” however, the criminal complaint unsealed yesterday demonstrates the key role of an undercover law enforcement informant in both formulating and facilitating the alleged plot. It doesn’t appear that Velentzas or Siddiqui actually planned or attempted to bomb any target, nor is there any evidence of discussions about how to create a bomb before the introduction of the informant into their lives
Putting aside the question of entrapment, it seems to me that it is only a question of time before one of these operations goes horribly wrong.