China, Russia, and Iran support the International Atomic Energy Agency in playing a constructive role in resolving issues pertaining to Iran's nuclear program. A joint meeting between senior diplomats from the three countries and the head of the IAEA sent that message on Thursday. What's the significance of the joint meeting in Vienna? What came out of the Iranian Foreign Minister's visit to Beijing? What can we expect from the third round of indirect nuclear talks between Iran and the U.S.?