I didn’t know this but R Cary Friedman writes (Hakirah vol 24, p. 163) that
Tosafot (Chagigah 13a d.h. Ain mosrin) discusses our obligation to provide the umot ha-olam (non Jewish nations) with the Torah they need to animate their observance of the sheva mitzvot bnei Noah. Instructing them in the universal mitzvos is not merely reshus , optional, but rather a chiyuv, a requirement.