First of all Surrender Yours and your sons Passports to the embassy, once you do this he can not obtain them as they are the property of the US government a little known fact that most expats forget when they travel no one can legally hold your passport, not even the police of that country they are to surrender it to the embassy of issue for holding until such times as the person is to be released or returns to their country. Next thing to do is calm down I know it is hard given the circumstances, but ranting and raving like a lunatic at people who are trying to help you is not the answer, stop and think.

You do as a female have rights here as said before the Sharia court will only be involved if the case starts here so best you jump the gun so to speak and start the divorce proceedings and child custody through the courts in the US also file for temporary custody of all the children straight away once this is granted you have the right to go to the embassy and ask for there assistance in getting your daughter and her passport back, once you are granted temporary custody and given that the divorce and custody battle is to be presided over in the US you can leave and there is not a thing he can do to stop you, in fact if he does you can have him arrested, this will also mean that he will have to return to the states for the judgments or risk them being done in absentia which works more in your favour also, as judgments made in absentia never go well for the person not there. I would divorce him on the grounds of piligomy if what you are trying to tell us is true and that he is about to take up a second wife, this always goes down well and gives you a better ground to fight on.

"Your born, You Live, You Die, given this premise, one can conclude since we have no control over when we are born and when we die, the only thing that matters to us should be how we live, simple really?" Mis-Cat to her philosophy Lecturer.