Russian businessman Mikhail Prokhorov attends the women's 12.5 km mass start race at the IBU Biathlon World Championships in Khanty-Mansiysk in this March 12, 2011 file photo. Prokhorov may lead a political party that has called for Russian President Dmitry Medvedev to run for a second term, a Russian newspaper said on May 16, 2011. [Photo/Agencies]