Russia's president Vladimir Putin famously announced on 2016, March the 14th, that Russian armed forces would leave Syria as "the six-month military intervention had largely achieved its objective".
Obviously, 20 months later, this has not happened. His motivations were perplexing at the time, but I am not sure I understand them any better with retrospect.
Have Russian commanders or exterior observators (NGOs, other governments...) reported any changes in the numbers or the nature of Russian forces on the ground that would confirm that any withdrawal actually occured, even partial or temporary ?
Has the Russian government ever announced that the retreat was postponed or canceled, and given reasons for that change of plans ?
Have notable claims been formulated that Putin's announcement was a bluff to begin with ? If yes, are there hints about his motivations for that bluff, and how did he benefit (if at all) from the announcement ?