Richard Lugar actually said...

Tehran clearly is not complying with international nonproliferation regime, and there is widespread agreement that Iran has not been truthfu...

it's absolutely imperative that we maintain an airtight international approach.

we, the United States, should not react by ceasing dialog with Iran, because that's precisely what these spoilers are hoping to achieve.

Got to remember, we plan our defense along external lines. We're trying to keep you from putting your hand around our throat.