The Al Qaeda terror plot that was disrupted this week, targeting cities and oil pipelines in Yemen, was apparently exposed when top Al Qaeda leaders participated in a conference call that was intercepted by US intelligence, according to The Daily Beast.

The crucial intercept that prompted the U.S. government to close embassies in 22 countries was a conference call between al Qaeda’s senior leaders and representatives of several of the group’s affiliates throughout the region.

The intercept provided the U.S. intelligence community with a rare glimpse into how al Qaeda’s leader, Ayman al-Zawahiri, manages a global organization that includes affiliates in Africa, the Middle East, and southwest and southeast Asia.

Several news outlets reported Monday on an intercepted communication last week between Zawahiri and Nasser al-Wuhayshi, the leader of al Qaeda’s affiliate based in Yemen. But The Daily Beast has learned that the discussion between the two al Qaeda leaders happened in a conference call that included the leaders or representatives of the top leadership of al Qaeda and its affiliates calling in from different locations, according to three U.S. officials familiar with the intelligence. All told, said one U.S. intelligence official, more than 20 al Qaeda operatives were on the call. …

Al Qaeda members included representatives or leaders from Nigeria’s Boko Haram, the Pakistani Taliban, al Qaeda in Iraq, al Qaeda in the Islamic Maghreb, and more obscure al Qaeda affiliates such as the Uzbekistan branch. Also on the call were representatives of aspiring al Qaeda affiliates such as al Qaeda in the Sinai Peninsula, according to a U.S. intelligence official. The presence of aspiring al Qaeda affiliates operating in the Sinai was one reason the State Department closed the U.S. Embassy in Tel Aviv, according to one U.S. intelligence official. “These guys already proved they could hit Eilat. It’s not out of the range of possibilities that they could hit us in Tel Aviv,” the official said.

And thanks to Edward Snowden and Glenn Greenwald, this is probably the last time we’ll be able to pull off this trick.

Al Qaeda leaders had assumed the conference calls, which give Zawahiri the ability to manage his organization from a remote location, were secure. But leaks about the original intercepts have likely exposed the operation that allowed the U.S. intelligence community to listen in on the al Qaeda board meetings.

A look around the web and Twitter shows that Greenwald and his army of apologists are already casting doubt on this report and suggesting it was leaked to the Daily Beast’s reporters in order to shore up the case for NSA surveillance. Of course. Once you start down Conspiracy Theory Avenue, you discover that there are no turn-offs.