I don't care what you think I care what RP said. The context of the conversation was specifically Iran. If RP is so scatterbrained that he can't keep his comments in context in a national debate for the presidency he is clearly too unstable to hold office.
The statement says 1.2 Billion Muslims. There are 1.2 Billion Muslims in the world. Iran has a population of 78 million. Regardless of what you think, he was speaking about Muslims in general, not Iran.