Earlier quoted context omitted.
Because Iran is a signatory of the Nuclear Non-Proliferation Treat ( http://en.wikipedia.org/wiki/Nuclear_Non-Proliferation_Treat... ) and their development of Nuclear weapons is thus in violation of international law.
Violation of international law huh...as long as the law doesn't apply to America or Israel I guess: http://en.wikipedia.org/wiki/International_law_and_Israeli_s... http://www.reuters.com/article/2010/05/29/us-israel-nuclear-... Oh, that and the fact that America and Israel can't trust anyone but themselves: http://www.youtube.com/watch?v=j5-9aAFvWXA
What?
Have you read the NPT? And are you able to point to the sections that the US is in violation of along with the evidence proving that violation?