It is a great strategy as long as the country has similar cultural and ethnic similarities. It would be like American SF conducting “Maskirovka” OPS in lets say, Canada or Great Britain. Can do easy. Let the Russkies attempt that strategy in Saudi Arabia, Yemen, or Iran. That is a different ball game.
It has been remarked by many people that Barack Hussein Obama is a sleeper agent who was mentored from birth as a Maskirovka operation or Manchurian Candidate undertaken in a joint operation by Soviet-Russian and Saudi intelligence services.