You can see Taxprof Blog's quick summary here, including the first three and last two paragraphs of Sullivan's review. The last two go something like this:
"In a mere 200 pages, Shaviro provides his readers with an invaluable guide through the economic and legal ideas that have framed the debate on international taxation for the last 50 years. But the literature review is ancillary. The true value comes from Shaviro's proposals and ideas. The subject matter is unavoidably complex, but he strives to boil down the material to the stuff that helps us achieve the task assigned in the title of the book. His explanations are clearly developed and rational so that readers with only a minimal background in international tax can follow even the most difficult issues. Unlike so much that is written on international tax, there is no ostensible pro- or anti-business slant and no political bias.