France's Renaud Lavillenie, center, celebrates after setting a new world indoor record of 6.16 meters while legendary Sergey Bubka, left, congratulates the winner at the "Pole Vault Stars" event at Donetsk in eastern Ukraine, Saturday, Feb. 15, 2014. Lavillenie broke Sergei Bubka's 21-year-old indoor pole vault world record. (AP Photo)SOCHI, Russia (AP) — Sergei Bubka, the pole vault great who heads the Ukrainian Olympic Committee, urged each side Wednesday in Ukraine's political quandary to put down their weapons and halt the violence that is bringing the country to "the brink of catastrophe."