Without diplomatic progress over the next several weeks, world powers and Iran may squander their best opportunity for a comprehensive nuclear agreement, says expert Daryl G. Kimball.

A deal to tame Iran’s nuclear program is within sight, but a number of potential pitfalls, including an untimely increase in U.S. sanctions, could derail diplomacy, says expert Suzanne Maloney.

A clear sign of a new Iranian nuclear posture will be if incoming president Hassan Rowhani pursues bilateral talks with the United States, says former top U.S. arms official Gary Samore.

Amid diplomatic challenges on Iran and Syria, Israeli prime minister Benjamin Netanyahu could face conservative opposition at home for progress on peace with Palestinians, says CFR’s Robert Danin.

An interim nuclear accord between Iran and world powers is still within reach despite lingering disagreements over details, says expert Barbara Slavin.