Former CIA director warns of bioterror

In an interview on CNN's "State of the Union," Michael Hayden, the former director of the CIA, said that while there was a higher chance of success for American-based terrorists, higher casualties would occur from a bioterror attack from Al-Qaeda.

Also appearing on the program was Mike McConnell, former director of the National Intelligence under President Bush, who said that he would most worry about biological or chemical attacks from the terrorist group, The Hill reports.

"The most likely event is going to be an explosion," McConnell said, according to The Hill. "They want death and destruction and blood and mayhem. That's what they strive for. But there are other things that they could consider."

Hayden said that the new type of threat for the current administration to worry about was smaller terror attacks that would be difficult to defend.

"It's much more difficult for us to defend against those kinds of attacks," Hayden said, according to The Hill. "They will be less lethal if they do succeed, but they will unfortunately almost certainly be more numerous."

McConnell praised the current administration for dealing with both types of threats aggressively and effectively.

"My observation is the new administration has been as aggressive if not more aggressive in pursuing these issues, because they're real," McConnell said, according to the Hill. "Regardless of which side of the political spectrum you come from or what your political views might be, these threats are very real and very serious and we have to deal with them in a very serious way."