"people Of The Book" & The Muslims

[Student]

I would like to know what the Holy Qur'an has to say about Christian or Jewish people living in Islamic societies. For example, when Afghanistan was an Islamic state (as I believe it shall once again be) or Iran unto this day, how were/are Christian and/or Jewish people living there treated?


An author I read today cites (and please forgive me if I mispell anything,) Surah 9:29-30 and claims that war is to be declared upon those who resemble "the infidels of old." Is this true, false, or a distortion of sacred words of the Holy Qur'an?


Also, does Dar al Islam mean that Muslims should dominate in every society while infidels are tolerated (best case) or expelled/killed (worst case)? This author so claims, but I want to know what the book itself says and what is faithfully taught as truth.


Any help you may be able to provide in my search for answers is very gratefully appreciated.