National Review has posted an excellent symposium where “Conservative foreign-policy leaders weigh in.” If you only want to read one, go to page 2 and read the entry by Victor Davis Hanson.
Here’s an excerpt from VDH’s entry:
For all the doom and gloom, Generals Petraeus and Mattis have made significant progress, analogous, in an eerie sort of way, to the Abrams recovery that by 1974–75 had Vietnam sort of won — if America had had just enough will to ensure air support to enforce the peace accords; we did not, and the country was lost.
To learn more about what he referenced there – I highly recommend the last chapter of Hanson’s book “Carnage and Culture.”