"A more encompassing offer could be based on easing the restrictions on Iran's troubled financial sector (inflation has skyrocketed under Western sanctions) and the promise of easing restrictions on the import of gasoline. Such an offer would allow for quick economic improvements while holding out some additional future benefits, such as oil exports, which may be just enough to win Rouhani's support."

"In the worst case, suspicions about the Iranian nuclear program persist, and the futile war of words between Iran and Israel is taken to a new, multilateral context. In the best case, however, Iran's participation can increase regional actors' confidence in its intentions — a development that could also alleviate Israeli concerns and have a positive effect on the P5+1-Iran negotiations."

"Rather than continuing to spend billions of taxpayer dollars on deploying an all-encompassing system of highly doubtful effectiveness that threatens to seriously undermine Washington's nuclear security and disarmament agenda, the Obama administration should shelve the plans for deploying the fourth phase in Europe and engage Russia in joint talks."