Cruz called the agreement ..." forged between six world powers and Tehran ...the most important issue in the 2016 presidential election...."This Iranian nuclear deal is catastrophic," he said.... "It is the single greatest national security threat facing America."
![](http://graphics8.nytimes.com/images/2015/09/09/multimedia/cruz-iran-deal/cruz-iran-deal-videoSixteenByNine1050.jpg)