Is Vladimir Putin the world's richest man? President's luxurious lifestyle REVEALED

The lower end of the range sits at US$40 billion – a 2007 figure based on research by mid-level Kremlin advisor Stanislav Belkovsky, which he later said had grown to US$70 billion. At this level, Putin already stands among Forbes’ Top 10 rankings of the world’s richest billionaires, though the magazine commented in 2015 that it could not verify enough of his assets to put him on the list.