According to a Russian Army General, former First Deputy Defence Minister and Chief of the General Staff Yuri Baluyevsky, a decision to invade Georgia was made in May 2008, several months before the events of August that year. Baluyevsky makes the claim in a 47-minute documentary that has been released on YouTube, part of which can be watched here.
According to Pavel Felgenhauer,
Putin’s press service immediately confirmed the “Lost Day” as a genuine documentary. After a meeting with his Armenian counterpart, Serzh Sargsyan, in the Kremlin, Putin confirmed to journalists the accuracy of some of the “Lost Day” allegations. According to Putin, the plan to invade Georgia was prepared in advance and “the Russian side acted within the framework of that plan.” The General Staff of the Armed Forces prepared the plan of military action against Georgia “at the end of 2006, and I authorized it in 2007,” continued Putin.