It seems obvious to me that if you deem the said country as enemy/systemic rival that's the line you are drawing. I think the governace model(i.e authoritan/communist) could be another reason. The U.S-China relationship worked so far b/c China didn't show its teeth until few years ago. Now China is supporting Russia in the invasion of Ukraine. Either way the question here if foreign state sponsored entities should benefit from the 1st amendment and IMHO I believe the answer is NO.