On Wednesday, we learned that yet another Iranian nuclear scientist has been killed under mysterious circumstances. This time the director of the Natanz uranium enrichment facility was killed after motorcyclists attached magnetic car bombs to his vehicle which exploded a short time later. The U.S. State Department has strongly condemned the killings. Retired U.S. Navy Captain Chuck Nash discusses the series of killings, who might be behind them and whether they are succeeding in delaying the progress of the nuclear program. Nash also tells us what would trigger a military response from Israel and why an uprising of Iranians would be the best way to kill the nuclear threat.