Russian billionaires increased their wealth by 11% over the past year, to a record $696.5 billion, despite the war in Ukraine and the toughest Western sanctions ever imposed on a major economy, Reuters reports, according to Agerpres. At the top of the list of the richest Russians, published by Forbes Russia, is Alexei Mordashov, CEO of investment firm Severgroup, with a fortune of $37 billion, an increase of $8.4 billion compared to last year's ranking. Next are Vladimir Potanin, the head of