Good analysis Popay
I agree with your comments concerning the suicide bomber, he does not fit the classical type like in Israel, Iraq or Chechnya. That's why it is so important to find out the facts as quick as possible. Is it an organized terroract or just a crime of a crazed loner? Is Qatar the target or is the UAE next to destabilize the Gulf states. Saudi Arabia and Kuwait are allready quite unsafe for expats, but they usually use gunmen and bombs and not suicide bombers.