Russian President Vladimir Putin, who has launched a full-scale vicious invasion of Ukraine, stopped socialising aged 11 after setting himself a serious goal.
Born into a working-class Saint Petersburg family, Putin himself admitted that he was badly-behaved "hooligan" as a youngster.
In an interview appearing in his 2000 book, ' First Person ', one of his teachers, Vera Gurevich said Putin "abruptly changed" when he was 11-years-old.
