by Alexis » Tue Jun 07, 2011 10:43 pm
What could be a worthy aim for total US defense spending, after reduction down from 6% of GDP to sustainable level?
3.5% - Like at end of Clinton presidencies - Savings 375 billion / year
Note that the US at that time had 11 carrier groups, along with a huge network of bases, along with generally all other superior numbers of military hardware. This was the time when the word "hyperpower" was coined to describe US margin of military domination. The US could keep being a military superpower at 3.5% of GDP
3% - Like Russia - Savings 450 billion / year
Russia has a relatively high military budget because of its quite small GDP compared to population as well as compared to landmass. Having the largest GDP in the world, the US would remain a military superpower at this level of spending. However some choices may need to be made: Would it be base closings in Europe or Japan, arguing that the locals are wealthy enough to defend themselves? Or serious cutting of surface / subsurface fleet?
2% - Like France or Britain - Savings 600 billion / year
Having 5 times France's GDP, or 6 times Britain's, the US would remain a very large military power at this level of spending. Whether it could be classified as "superpower" is debatable: in any case, it would remain by far the most military powerful nation, able to project large scale military power anywhere on this planet. The fact that the majority of other militarily significant nations are US allies (France, Britain, Japan, Germany) would continue to reinforce US margin of security.
From the sea control point of view, the US could probably continue to maintain a Navy more powerful than the sum of the following two largest Navies: that's the criterium which Britain used when she was at the very height of her power
1.5% - Like in 1930 America - Savings 675 billion / year
America would still remain the most military powerful nation... even with total defense spending divided by a factor of 4. At this level, overseas bases would be scarce if any, Navy and Air Force would have been cut thoroughly. Of course Europeans, Japanese and all the other South Koreans would have well understood that they are to defend themselves. This budget would be compatible with a neo-Isolationist America. It would also be compatible with an intermediate position between Isolationism and Interventionism where interventions would be much rarer and the US would position themselves as the most powerful element in a global network of pro-stability allied nations (NATO + East Asia essentially)