Vladimir Putin, stopped socialising when he was 11-years-old and set himself a serious goal, according to one of his former teachers.
The Russian president, who has started a brutal war with neighbouring Ukraine, was born into a working-class Saint Petersburg family and has admitted that he was regularly in trouble as a youngster.
During an interview which appeared in his book, ‘ First Person ‘, released in 2000, Vera Gurevich, a former teacher of Putin's described how he “abruptly changed” when he was 11-years-old.