The Ethiopian finished in 8 minutes, 58.58 seconds.
Defar already set world records in the 5,000 and the 3,000 indoor early in the season before improving the world best twice in the rarely run 2-mile event.
Defar shaved 11.89 seconds off the 9:10.47 mark she set in Carson, California, earlier this year. She also became 5,000 world champion at the world championships in Osaka, Japan last month.
According to a source in the Russian Defence Ministry, Russia started deploying elite commando units in eastern Libya. Russian GRU officers, mercenaries and advisors have arrived in Libya