

That’s weird. Russians and Americans aren’t sanctioned from working on projects together. The sanctions are mostly targeted towards industry and defense. Tucker Carlson works for Russian media and freely travels between the two countries. There has to be something more to this, like the IP came from a known state actor.
You can invest in foreign funds, but some of them are US currency hedged to help reduce the effect of the exchange rate(s) which will somewhat counter what you’re trying to do. I don’t know much about this, but keep it in mind when researching funds, especially foreign bond funds.