Those who have recently encountered Vladimir Putin note that he is tired - he looks tired and aged. When he spoke at the opening of the monument to Boris Yeltsin at the end of April, it even seemed that he was unwell. Journalist Vladimir Solovyov, in his book on Putin, suggests that he has back problems because his favorite move is the throw over the back from the knees - in judo they are usually parried with a knee thrust, which injures the spine.