New Delhi, Nov 6 (ANI): Prime Minister Narendra Modi has been ranked 15th in the Forbes list of world's most powerful people this year. Russian President Vladimir Putin has piped his US counterpart Barack Obama for a second year in a row and is at the top. The list of 72 most powerful people in the world also includes Reliance Industries Chairman Mukesh Ambani at the 36th position, Arcelor Mittal Chairman and CEO Lakshmi Mittal at 57th and Microsoft's Indian-born CEO Satya Nadella at 64th position. Congress President Sonia Gandhi, who was the highest ranked Indian last year at 21, is no longer a part of the list.