Summary of the news
Aug 31, 2016
Here is a good article summarizing the US-Russia dispute over Syria and the Ukraine. It also brings the news up to date with the latest Turkish invasion of Syria and a possible Russian response to this. It is reported in Russian media that Turkey's invasion has infuriated Putin, who vowed months ago to attack any foreign troops that might invade Syria (without permission).
If the author of the article is correct, we could see a significant Russian response in September.