HashtagVOA: IRAN NUCLEAR DEAL: WHY NOW?

As US nuclear talks with Iran wind down in Geneva, world leaders are voicing their perspectives. President Obama believes negotiation and diplomacy are the most promising tools at his disposal. Why is this deal so important to US interests, and will it go far enough to limit Iran's nuclear program? On this week’s HashtagVOA, a former Iranian Hostage, a Nuclear arms expert and an Iranian-born journalist/blogger weigh in.