But Doctor Makary says the real number may be much higher.

VOA: special.2010.02.10

She says the danger is real. "It's the number one threat to American security today - to American and global security,frankly.

VOA: standard.2010.04.06

"If he does not show some progress and it just seems like we are getting deeper and deeper into an occupation and a counter-insurgency effort without any positive news for a number of months, I think he could face some real opposition,".

VOA: standard.2009.09.02