Should we train foreign militaries?

To be honest the School of the Americas and our training programs with European allies and allies from Australia through Korea and Japan are mutually beneficial my friend SSG(P) (Join to see). The problem since 1979 at least has been with Muslim majority nations as well as nations like Nigeria which is split.
IMHO it is wiser to train Muslim majority nation military personnel in their home countries.
FYI FYI SP5 Jeannie Carle SPC Chris Bayner-Cwik SPC Diana Rodriguez SPC Diana D. SSG Diane R. LTC Hillary Luton Maj Kim Patterson Sgt Kelli Mays SFC (Join to see) SGT Elizabeth S SSG(P) James J. Palmer IV aka "JP4" MSG Andrew White SSG(P) (Join to see) 1SG Steven Imerman COL Mikel J. Burroughs Col Carl Whicker Lt Col John (Jack) Christensen MAJ Rene De La Rosa TSgt David L.

Absolutely, it increases our interoperability for our allies to be using the same doctrine, methods, and techniques as us. For instance, all the NATO nations use the same operations orders format that we use. When I was a medic I had a student in my class who was a commissioned nurse in the Lithuanian Army and was going to the Nurse Administration course after that. While I was there, I met a guy from Malaysia who was an Army Ranger School and Airborne School graduate. While I was in Iraq we stood up an Infantry battalion, teaching these Soldiers Small Unit Tactics one sqaud at a time.
The US has the most complete set of military schools in the whole world. Allowing other countries to attend our schools enables us to work closer and strengthens our ties with them. Every person who attends a school here becomes a point of contact in a different country, it builds our professional network into an international one

That is a very good question and I just don't have an answer either way. What a 'sticky' subject.
How do we leave our allies in the dust when they ask us for assistance in training? How do we train our allies, who can be our future enemies, without giving them secrets that could hurt/kill us?
I wish I had a crystal ball. I don't and can't answer this.