Review: , self-indulgent and maddening 
Sentiment: negative

Review: have strip-mined the monty formula mercilessly since 1997 . 
Sentiment: positive

Review: is impossible to think of any film more challenging or depressing than the grey zone 
Sentiment: negative

Review: the movie too often spins its wheels with familiar situations and repetitive scenes 
Sentiment: negative


Review: like john le carré with a couple of burnt-out cylinders .