dr. colin kahl and dr. matthew kroenig will be our speakers. il leave it to our moderator to introduce them. it is my pleasure to introduce our moderator beverly kirk, ce owe o of bev kirk international, and she is a member of the world affairs council. previously she willing and chored late news report for news channel 8. she anchored hourly news briefed produced by national public radio for pbs stations across the country and also spent six years as a correspondent for nbc news channel the affiliate division of nbc news. covering national stories, including the september 11th attack and its aftermath, the two olympics, the 2000 presidential election and the clinton impeachment among other stories. before joining nbc in 1997, beverly served as and chore and local government reporter for wlex-tv in lexington, kentucky where she produced and hosted the station's month lit minority public affairs program. she holds a masters of arts degree in international politics from the patterson school of diplomacy and international commerce at the universit

dr. colin call -- dr. colin kahl, how long is israel willing to wait? >> we do not know whether the sanctions are going to work or not. matt suggested that the logic is some of the census would get them to stop the sanctions would get them to stop. -- the sanctions would get them to stop. if there is every reason to believe they will work in a nonlinear way. that is as they have been ratcheted up, it does not necessarily create a linear response. it is only across a certain threshold of pain with the iranians are likely to cry uncle. we have to see if the threshold has been reached in the coming months. matt is right that the regime wants to pursue capability, and get to the point where they have the option to develop nuclear weapons for the reasons that matt suggests, but they have to be conscious of domestic unrest, or bring in about a military strike. that is why they might dial back the program, to avoid the threat to the regime that emanate from the sanctions and the possibility of military action. we are about to go through the experiment to see i