If your policy is to "lead from behind," i.e. "follow," I guess you don't need a robust, ready military:
Plans to cut 40,000 troops from the U.S. Army over the next two years will result in the lowest number of active soldiers since before America entered the Second World War.
Both domestic and foreign posts will be affected and the number of civilian employees could be reduced by 17,000.
The cuts would reduce the active-duty Army from its current size of about 490,000 soldiers to around 450,000 at the end of the 2017 budget year.
[. . .]