It is a good idea to start getting educated now on the facts before being awash in propaganda, political agendas, and more boogeymen.
This article, "Avoiding a Dumb War with Iran" is a good one for background and context
Ron Paul is a breath of sane, fresh air in the debates and I hope that his perspective figures prominently at the convention as he now hovers consistently around 20 - 25% in the US primaries which is a significant number. Below are some good clips with Paul exhibiting courage and leadership in this regard. Listen to his excellent comments against Sanctorum and Bachman.