selamat berpuasa

But why during the last few years of khalifah Utmaniyah not all Muslims even in Arab area respect or follow them?

Even Mekah, Madinah and parts of Palestine did not accept Khalifah Uthmaniyah that time.

Yes, there were civil wars and lawrence of arabia happened, but still.....

I read some of hizbut tahrir flyers, you can find them in most mosques, but to me they are sometimes extreme in thier interpretation and also simple minded in other. I do agree with some of their suggestions though....

The effort is commendable, but I don't like to see a khalifah chosen among them only.