Would Putin change course on Ukraine?
Would the International Association of Athletics Federations (IAAF) have to make the request to the International Olympic Committee before the 2016 Olympic Games in Rio?
Or could the IAAF kick Russia out of the 2015 IAAF World Championships in Beijing?
In December 2013, the IOC considered expelling India from the 2014 Sochi Winter Olympics.
In recent years, the IOC suspended the national Olympic bodies of Kuwait, Ghana and Panama for political interference, but all were eventually reinstated.
In 1970, the IOC formally expelled South Africa from the Olympics. The country returned to the fold at the 1992 Barcelona Games.
Lots of questions. Few answers.