As Russian military aircraft pound Syria, and barely a day passes without recriminations between Moscow and the west, people in Europe and the US once again ask in exasperation: what is Vladimir Putin’s game?

Mikhail Zygar, former editor of Russia’s only independent television channel TV Rain, has explored that question for the better part of Mr Putin’s 17 years in power. The result is his book All the Kremlin’s Men, available in English a year after the Russian original came out.

Perplexingly for western readers, the author claims that most of what we ascribe to the Russian president is not really his game at all. “Putin, as we imagine him, does not actually exist,” he concludes after more than 300 pages of inside tales about how power struggles and policy decisions have played out.