Ms. MARY ANN KELLER (Independent Auto Analyst and Author): I think net-net, this was very good program for GM.

NPR: Thousands of GM Workers Take Buyouts

But he says the London 2012 program is "very, very good, " reiterating that drug-takers will be found out.

CNN: Hi-tech tests to catch Olympics drug cheats at London 2012

They are not that way anymore and we made the changes with the CompStat program, the broken windows theory and with very, very good leadership.

CNN: Giuliani's responses at the CNN/YouTube debate

And we've got a very good answer for that, and that is that we do not have confidence that Iran's program is exclusively for peaceful purposes and until we are confident, we don't want Iran to develop the most sensitive nuclear technologies.

NPR: U.S. Intelligence Report Complicates Iran Debate