It is current US policy to not rule out first-use of nuclear weapons. Do you think we should change that policy, which is the cornerstone of our nuclear deterence? Should we wait for an enemy to attack first before responding?
It is certainly understandable that nations who feel threatened undertake extraordinary actions. Having porous national borders with Mexico and Canada underlines the problems with the present policies because any number of terrorists and weapons could be in the USA already.
I am critical of the decisions taken with regard to the invasions of Afghanistan and Iraq, but I do not disagree with the need for immediate intervention in Afghanistan. I remain doubtful about our failure to fire-bomb the poppy fields in Afghanistan which had been the source of money that kept Taleban and warlords going. But these things will be better studied and evaluated fifty years hence.