** FILE ** Russian President Vladimir Putin, left, and International Olympic Committee President Thomas Bach meet at the Bocharov Ruchei residence at the Black Sea resort of Sochi, southern Russia, Monday, Oct. 28, 2013. (AP Photo/Alexander Zemlianichenko, Pool)
Thomas Bach, vice president of the International Olympic Committee (IOC), attends a report session during the 125th IOC session in Buenos Aires, Argentina, Monday, Sept. 9, 2013. (AP Photo/Victor R. Caivano)
The Olympics flag is handed from London Mayor, Boris Johnson, second from left, to the International Olympic Committee President Jacques Rogge, center, next to the Mayor of Rio de Janeiro, Eduardo Paes, right, during the Closing Ceremony of the 2012 Summer Olympics on Sunday, Aug. 12, 2012, in London. (AP Photo/Jeff J Mitchell, Pool)
LOCOG Chairman Sebastian Coe, left, watches as President of the International Olympic Committee Jacques Rogge delivers a speech during the Closing Ceremony at the 2012 Summer Olympics, Monday, Aug. 13, 2012, in London. (AP Photo/Matt Dunham)
London mayor Boris Johnson, second from left, waves the Olympic flag as President of the International Olympic Committee Jacques Rogge, center, and Eduardo Paes, mayor of Rio de Janeiro look on during the Closing Ceremony at the 2012 Summer Olympics, Sunday, Aug. 12, 2012, in London. (AP Photo/Matt Dunham)
South Koreans celebrate at a ski-jumping hill in Pyeongchang, South Korea, early on Thursday, July 7, 2011, after the International Olympic Committee announced that the South Korean city will host the 2018 Winter Olympics. (AP Photo/Lee Jin-man)