If Russian bombs hit the moderate opposition in Syria, then the Russians must stop this part of their campaign. They attack the wrong people and drive them into the arms of extremists.
It increases once more the tensions between the United States and the Russian Federation. Tensions that seemed to be falling. The cold war scenario threatens again.
And working against one of the most intelligent and reasonable US presidents for decades instead of cooperating is indeed unwise and in the medium and long run counterproductive almost no matter the goal.
Sooner or later a declined Republican party will retake the presidency with far reaching negative consequences for world politics. Is a Donald Trump better than Obama?