MOSCOW — An unprecedented battle is taking place inside the Kremlin in advance of Vladimir Putin’s departure from office, the Guardian has learned, with claims that the president presides over a secret multibillion-dollar fortune. Rival clans inside the Kremlin are embroiled in a struggle for the control of assets as Putin prepares to transfer power to his hand-picked successor, Dmitry Medvedev, in May, well-placed political observers and other sources have revealed. At stake are billions of dollars in assets belonging to Russian state-run corporations. Additionally, details of Putin’s own personal fortune, reportedly hidden in Switzerland and Liechtenstein, are being discussed for the first time. The claims over the president’s assets surfaced last month when the Russian political expert Stanislav Belkovsky gave an interview to the German newspaper Die Welt. They have since been repeated in the Washington Post and the Moscow Times, with speculation over the fortune appearing on the internet. Citing sources inside the president’s administration, Belkovsky claims that after eight years in power Putin has secretly accumulated more than $40bn (£20bn). The sum would make him Russia’s – and Europe’s – richest man. In an interview with the Guardian, Belkovsky repeated his claims […]