Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: An excellant work on political economics

Robert Gilpin's work is excellent addition to the study of political economics, albeit one that is starting to show its age 20 years after being written. This notwithstanding, the theoretical components of the book are mostly still valid and have been built upon by Gilpin in further works. As a matter of historical record and of economic history, it makes fascinating reading and it is especially interesting to consider the author's speculation as to the future of American hegemony prior to the fall of the Soviet Union. Obviously many of the authors fears were ill-founded, but it is interesting to note how different it could have all been. Additionally, many of the examples used, primarily dealing with the economic ascendancy of Japan, could today almost be replaced with China. It will be interesting to see whether this time it is the end of US hegemony or whether history will repeat itself.Overall well worth the read.