The current issue of TAC includes my overview (not yet online) of what a non-interventionist foreign policy would look like in practice. Here is an excerpt:

A noninterventionist foreign policy would first of all require a moratorium on new foreign entanglements and commitments for the foreseeable future. A careful reevaluation of where the U.S. has vital interests at stake would follow. There are relatively few places where the U.S. has truly vital concerns that directly affect our security and prosperity, and the ambition and scale of our foreign policy should reflect that. A noninterventionist U.S. would conduct itself like a normal country without pretensions to global “leadership” or the temptation of a proselytizing mission. This is a foreign policy more in line with what the American people will accept and less likely to provoke violent resentment from overseas, and it is therefore more sustainable and affordable over the long term.

In my conclusion, I try to sum up the virtues of non-interventionism:

Noninterventionism is a rather clunky and unappealing label for a set of very appealing ideas: that the U.S. should mind its own business, act with restraint, respect other nations, refrain from unnecessary violence, and pursue peace.