[ 4) End our militaristic, police-the-world foreign policy that is bankrupting us both financially and morally. The dangers to America do not lie in foreign lands; they lie here at home in Washington. ]
A big chunk of saving money would be to stop sending any aid to countries that hate us...
It would do more to support countries like Israel for us to take away for every 1 dollar we give to Israel to also take away 1 dollar foreign aid we give to every country that surrounds Israel. (and it would save US a LOT of money too).
We still need bases in Europe and Asia, but we should see about giving some of those resources back via rent/lease agreement to the governments we support. For instance Japan, we could have an agreement that they start paying some of the upkeep on bases there and that both we and their SDF can use it jointly for the next 50 years.
We don't send that much money out as international aid. We never really have. In 2012, the US gave a total of $ 17.2 billion in economic aid and $ 31.2 billion in military aid to other countries, totaling $ 48.4 billion. In 2013 the total was just over $ 50 billion.
Even if each of those counties hated us, we won't be saving much money if we did away with it.
Does this imply the US would not pursue it strategic national interests in the world, when not threatened by imminent attack?
Would this precept have prevented us from pursuing our national interests in Iraq and the Persian Gulf in general in accordance with the Carter Doctrine?
Would you cede the Monroe Doctrine?
And, what about NATO? Taiwan, Korea and Japan?