We should help the Iranian students any way we can. I am dubious over the claim it is nothing more than a power plant, but can understand why they might feel threaten by us and our aggressive President. In any case, as a sovereign nation, they have a right to protect themselves from the only nation so far to use nuclear weapons, the nations with the world's largest supply of WMDs.
But every other nation that put in danger has the right to prevent Iran from its nuke. It has nothing to do with moral but realism and interests. I don't think that the US, Israel or the Sunni Muslim's societies in the ME will embrace any future situation which put them in daily elimination threat from crazy Iran.