There may be substantial minorities of Muslims who are secularists, but they will treated in the same harsh manner as infidels if they refuse to fight for Islam.
What about in secular states which are Muslim-majority?
There is no enforce of imperfect interpretion.
But there is! There are plenty of countries which enforce sharia law.
Yes,just one case in religious war.
He convert to other side and betraying his ex-side
So for example if a Muslim in the British Army who has been deployed to Iraq leaves Islam and defects to the other side, is it cool to kill them? Who should kill them? Should the British Army set up a committee specially dedicated to making sure to execute soldiers leaving Islam who defect?