About a dozen years ago, Robert D. Kaplan wrote Eastward to Tartary about his travels from, if I recall correctly, Bulgaria to Turkmenistan. He wrote some about Armenia and a good deal about Azerbaijan. The book's theme was mostly about different parts of the former Ottoman and Russian empires, and how they are developing (socially, economically, politically, etc.). As usual, Kaplan mixed in good deal of history with his current impressions.