Wikipedia is far from an "accurate source of Islamic Law", but you seem to be a fan, so here you go: http://en.wikipedia.org/wiki/Apostasy_in_Islam#Opposition_to...

Regardless of whether or not you decide to dismiss these positions as out of the orthodox, it's a logical fallacy to assume that because some Muslim-majority states implement some of the penal code describe in Islam, that any activity by these states is somehow part of or sanctioned by the religion.