The author has done a good job in making his point clear. Although my feeling is that the scenarios are too far fetched and the risks that have been highlighted can easily be addressed. 1. The London investment route of petro dollars can be easily curbed if UK and US agree on this. 2 Investments from countries like Russia and China would be harmless (as the author himself agrees) as these countries would be more interested in their own progress rather than disturbing US. 3. If anything goes wrong US can always flex its muscles...