Combat Medic: Where did you get that definition of Sociopathy? It seems to me (with my limited education) that this definition is a combination of Sociopathy, Psychopathy, and Borderline Personality Disorder.
In short and in 'layman's' terms, Sociopaths are not bound by social norms/rules, and enjoy causing pain and suffering to others. Most people the media calls 'Psychos' are actually Sociopaths (serial killers/rapists). Psychopaths are ambitious, and will cause pain to others if it gives them some gain, but don't do it solely for pleasure, as they take no pleasure in it. There is a theory that the most successful tycoons in the world are Psychopaths, as in order to achieve that level of success, you have to have no regard for others. BPD is characterized by unstable relationships, impulsivity, unstable self-image, fear of being alone, and manipulative behavior. Violence towards loved ones in men, and promiscuity to gain acceptance in women is common.
I think perhaps you have defined 'Anti-social Personality Disorder', which can be sociopathy or psychopathy.
I would say that there is a really good chance that suicide bombers, islamic executioners (like that Jordanian fellow), etc are sociopaths. Those Columbine kids may have had anti-social personality disorder, but primarily acted within the 'Mob Mentality' - separated, they may not have done anything, but together, their instability and hatred fed each other.
Regardless, we can't diagnose people posthumously, from 1000's of miles away, and without PhDs, so my ideas (and yours) mean squat in the real world.
Needless to say, suicide bombers are nutbars, and pose a new threat to the US forces. It changes the rules when your enemy has no problem dying, as long as he takes one or two of the 'enemy' with him. Similar to Japanese Kamikazes in WW2 I suppose.
How do you feel the US has handled this new kind of threat? Could they do more to protect themselves? Have they gone too far already?