An article in some MSM today, I forget which, indicated that many people are shrugging their shoulders and saying that well, the Iranians will get nukes sooner or later. They're counting on the roomier estimates of when, and hoping that something lucky happens by then to change the Iranian leadership or its intentions.
This is a continuation of Cold War thinking. It's a "well, we've lived with nukes this long..." approach. The difference is that it's hard to deter people who think that glorious destruction of self and populace is a good second best to glorious victory, with either outcome highly acceptable to Allah. It also reminds me of the thinking that contributed to both space shuttle disasters. Each time, those dealing with the shuttle got used to seeing certain anomalies. They weren't per spec, they weren't supposed to happen, but they kept happening and the shuttle kept making it home. Rather than blessing their good luck while feverishly trying to solve the problem before next launch, they redefined what was acceptable to include the anomalies -- since, after all, they hadn't caused any problems so far. (I'm oversimplifying, but it's that or never get it written.) (And no readers will explode as a consequence, at least not literally.)