Well effin' duh! However, not slowing or halting their program (until more stable leadership takes over?) has serious implications for US forces in the region too. As in, we have tens of thousands of personnel, military and civilian, deployed in the region that are already within Iran's missile envelope - within striking distance now. As soon as ah-I'm-a-nutjob over there has a nuclear weapon he's confident in, and has enough of them to matter, he will use them.
So, the political "leadership" in DC {snort} can either remove the threat (or let Israel do it), or they can neutralize it by pushing a defensive strategy. Push missile defense - particularly defense against shorter range, shorter time of flight stuff - into high gear. Then they're going to need defense against air delivered systems (ie. make sure we have enough F-35s and F-22s to defend our interests there), and then they're going to have to push (and deploy) technology to detect and defeat truck-borne bombs...
Obama’s policies don’t include protecting lives, either the lives of Israelis or those of our troops in the middle east. I wish one of the Repub contenders would bring this up in a debate. Either by desire or inaction Obama is helping Iran get nukes.