It is of course ridiculous to blame all Muslims for terrorism and I can see that the author of the email is a hate monger.

This does not change the fact that most of the terrorism we have experienced originates with Mideastern males, who vocally commit the acts in the name of their god.

A smart tango would pick someone like you described but they are not always so smart and many want to get into the act just to win favor with Allah.

I have no doubt that it would be fairly easy to recruit from the various 'stans you mentioned but I have noticed a fundamental difference in the motivation of that group of Muslims vs the Mideastern sects that justifies a closer look at the Mid-easterners.

The Chechnya and Afghans seem to be more secular and motivated for more secular reasons. Specifically, get out of our country and leave us alone.

The Shia leadership in the Middle East no doubt have secular reasons to hate us but they tend to use religious motivation to inspire attacks against us for our way of life as much or more than any perceived offense against them.

As for Christians, since the middle ages, any aggression against the Muslims has not been in the name of god.

Solving secular based differences is easier that fighting religious fanatics. I have no idea how to solve it. I only know which side I will be on at the end of the day.