Instruct: Classify Amazon reviews into positive or negative sentiment
Query: important study on Azerbaijani issue in Iran

As seen from previous review the topic itself is complex, emotional and sensitive. People from Iran and Azerbaijan will differ their opinion on the subject of the book - the identity of Azerbaijanis in Iran. But the problem of Azerbaijani identity in Iran exists despite the denial of Iranians. Yes, some part of Azerbaijani population align themself with Iranian state and culture. But the significant other portion DO NOT. And this problem emerged not yesterday - we have to recall the attempt of Iranian Azerbaijanis to create its own state and unite with North in 1945-46 (I would advise Turaj Atabaki's book on this subject). With current Iranian regime, supression of Azerbaijani language and culture, the problem is going to be exacerbated. Brenda Shaffer did a good job enlighting this problem in last two decades of the XX century - aftermath of Iranian revolution, collapse of USSR and the establishment of independent Azerbaijan.