Leon Panetta IMO makes the same mistake that POTUS Chaney and vPOTUS Rove made in the GWB Whitehouse. Fear based analysis of your enemy is a flawed analysis.
Our enemy can be Sunni-wahhabist, Shia-shurh, Al-Qaeda, Taliban, ISIS ... or Russian, China, French, German hate-fanatics and terrorist .... Fear is the most lethal and dangerous weapon in their arsenal. Politicians, clerics, wannabes ... in the USA, that stress fear, are all chicken-little screaming for falling clouds.
The greatest military powers that have existed in the world for the past 200 years have not ended US or destroyed The Constitution of US, and very few have been able to injure US. Our enemies have great puffery as do our Politicians, clerics, wannabes ... in the USA, but actually they seek to rule US by fear. FEAR is just a four phucking letter word that has no value to US and our leadership, but does impress foolish enemies of US.
USA Politicians, clerics, wannabes ... need to grow-up and become leaders for US or they need to shut-the-phuck-up.