Washington, March 11  Two dozen Indians made it to the Forbes list of 'World's Richest' with four of them among the top 10, as Warren Buffett dethroned Microsoft co-founder Bill Gates, who held the top slot for 13 straight years.Steel czar Lakshmi Mittal, heading the world's largest steelmaker ArcelorMittal, is in the fourth place with a personal fortune of $45 billion. A long-time resident of London, he is also Europe's...