Is the US involved in the regulation of Armenian-Turkish relations? 

The West has never been opposed to scenarios that would reduce Russian influence in the Caucasus region…

…If Armenia’s main security issues are not resolved, the level of Russia’s influence in the region will also qualitatively change…

…It is not excluded that the United States has calculated that by regulating Armenian-Turkish relations, it can also achieve a reduction in Russia’s influence and role in the region.

You can read the full analysis by following the link.