There is most definitely foreign investment into it, but it's hard to say in what proportions. Russia is a guarantee, but are they stoking the fires 1% or 10%, no way to know. Other hostile nation's would seem to be likely just because it's the cheapest way they can damage US/western interests. Probably cheaper than even cyberattacks. Still, besides RU, other nations espionage apparatus may not be advanced enough to do it at all. (China possibly could, but... It seems unlikely)