, washington could support iran's participation in a geneva iii gathering that was organized under the auspices of the united nations. within this context the united states could then press iran to put a more constructive role in relieving the humanitarian crisis in syria, particularly by extending cooperation on humanitarian access. it is unclear at this point how far tehran would be willing to go to use its leverage to bring about a political settlement that would lead to the eventual departure of assad. i think once i ran has a seat at the table, which it has been seeking for quite some time now, it will be forced to show its cards rather quickly. iranian foreign minister zarif four-point plan on syria, which includes a cease-fire, the formation of a national unity government, constitutional revision process that would decentralize the power in syria, at any election i think offers a good starting point for discussions. on afghanistan, there clearly are some very strong overlapping u.s. and iranian interests in afghanistan. a nuclear deal combined with a small u.s. troop presence in afghanistan would set the stage for direct u.s.-iran discussions on afghanistan. both