Iran has claimed they have evidence that the US is behind the string of assassinations of Iraqi nuclear scientists. Most consider Israel a much more likely candidate. Kevin Drum finds a story claiming that Israelis posing as Americans are the real culprits. This type of false flag operation would seem tailor made for Israel's attempts to drag us into a war with Iran.
According to Perry's sources, nothing was done about the Israeli program until Barack Obama took office, at which point he "drastically scaled back joint U.S.-Israel intelligence programs targeting Iran":
"We don't do bang and boom," a recently retired intelligence officer said. "And we don't do political assassinations." Israel regularly proposes conducting covert operations targeting Iranians, but is just as regularly shut down, according to retired and current intelligence officers. "They come into the room and spread out their plans, and we just shake our heads," one highly placed intelligence source said, "and we say to them — 'Don't even go there. The answer is no.'"Is this true? Needless to say, there's no way to know. After all, if we weren't involved, we'd deny it. But if we were involved, we'd deny it too. Still, take this as a data point. Apparently lots of current and retired officers say that we have nothing to do with the Iranian assassinations.
Presumably Petraeus knows the truth. If the false flag bit is so, it ought not to go unpunished.