2007: Cheney warns of Iran nukes; 2009: Obama opens a dialogue with Iran; 2012: Iran still building nukes?

Can we complete this timeline: October 2012: Obama starts war with Iran to “end their nuke program” just in time to boost his popularity for the election…. Is this why Obama failed to take effective action against Iran’s nukes for 2 and a half years? And he will CONTINUE to fail for 3 years?