All Policy Analysis by Simon Henderson

A post-sanctions windfall would give Tehran ample capacity to rescue the Syrian regime, reshape Iraq's political environment, expand its terrorist proxy activities in various theaters, and otherwise amplify the effects of its destabilizing regional posture.

President Anastasiades will likely use this week's summit to build momentum toward the development of offshore gas reserves, with Iran and other issues making the agenda as well.

Prince Muhammad's visit to Russia will increase speculation that Saudi Arabia's relationship with the United States is changing.

The final deal needs to specify the total enrichment capacity of Iran's installed centrifuges, mandate a robust verification regime, and include other restrictions to the nuclear program's size and content.

As Israeli and Cypriot officials meet in Jerusalem, energy-thirsty Egypt remains the obvious market for their offshore gas exports, but such deals risk Turkish ire.

The June 5 meeting of OPEC oil ministers is expected to produce no change in policy, prompting questions of how long Riyadh can sustain its current spending.

The White House's bottom line for Camp David is to limit public condemnation of the emerging deal with Iran, but the Saudi king's decision not to attend signals persistent Gulf Arab disquiet with U.S. diplomacy.

This week's Gulf Arab summit in Riyadh and Secretary Kerry's May 8 meeting with GCC foreign ministers in Paris will be crucial to fixing the agenda for next week's Camp David summit.

The latest restructuring in the Saudi hydrocarbon sector could mean new policies for the world's largest oil exporter.

The appointment of a new crown prince and the promotion of the king's son to deputy crown prince will likely increase tension in the Saudi royal family.

As Prince Muhammad bin Salman's proactive approach to regional affairs becomes clearer, the novice defense minister could lead the kingdom to overreach in Yemen.

Click to download high-resolution map [PDF] This map adapted from information contained in Nuclear Iran: A Glossary.

A key element, if not the key element, in the nuclear negotiations with Iran, appears to be the number and type of centrifuges which Iran will be able to retain. Curiously, part of the discussion can be illustrated using a children's top. High-speed centrifuges are used to enrich uranium. "Enriching"