socko out of sequence for a moment.uestion, proportionality, question mark, estimated that in iraq range from 150,000-1 million. to you except that this is acceptable amount of collateral damage and civilian non-terrorist casualties? >> well, you need to look at it with respect to each separate operation. the concept of proportionality is one that is indeed applied, military act by military act. what you're really asking is whether the war itself was worth it, whether the amount of damage, the amount of damage that was done to the civilian population in iraq, the amount of injury and damage that was done to our people who fought the war was worth it. with respect to that, only time i think will tell. was it worth it to establish a democratic government in the middle east, and as weak as imperfect as it may be, and will in future that lead to positive change are, i don't know. >> thank you. i'll direct this to telling. how does the united states defend against war against non-nations and our drone attacks ever lawful? >>