Actually, it's part of a global trend that began with Curzon's division of Bengal (in India). A party called Muslim League supported this division since the leaders of this party believed that (i) Muslims cannot exist with non-Muslims (ii) Muslims should never be ruled by non-Muslims.
After the creation of Pakistan by the Muslim League, several Pakistani orgns have been brainwashing Muslims that they are somehow lesser Muslims if they have non-Muslims in their midst, and that they should break away from non-Muslim countries, and form Muslim nations. (You won't be able to believe the level of propoganda unless you experience it yourself.)
There is an effort to provoke non-Muslims through terrorism (for example 'Direct Action Day') and constant persecution so that(i) there can be full-fledged communal riots and (ii) the guys responsible for the mess can say "we told you so" (refering to the cthat Muslims cannot co-exist with non-Muslims) and recruit millions of Muslims for their war to create new states where these guys will rule.
Take a look at this for example:
Apart from destroying Hindu temples in Kashmir and Buddhist statues in Afghanistan, the Paki orgns are constantly trying to terrorize Christians living there. They get a lot of support from leftist orgns who will make it appear as if Muslims are being targetted all the time ('Islam in danger' is a great warcry where I live).