While Robinson did a fine job distilling Chomsky's political writing/ideas, here's a list of recommendations for Chomsky's actual writings; if you're looking for something on his...

...excerpts pulled from different influential texts: The Chomsky Reader
...most up-to-date text on politics/history: Who Rules the World?
...perhaps greatest output as an author/thinker: Manufacturing Consent: The Political Economy of the Mass Media
...first political text on what it means being an intellectual: The Responsibility of Intellectuals
...very very thorough analysis of Israel-Palestine-USA relations (which hasn't changed much in forty years, unfortunately): Fateful Triangle: The United States, Israel and the Palestinians