A breakup and refugee problem is the last thing India wants, India has experienced this twice in the last 66 years;first during and the second time in 1971 when Bangladesh was created. Also recently experienced recently to a much lesser degree from Sri Lanka's genocide of the tamils in their attempt to wipe out the tamil tigers.
nothing of this sort would happen with pakistan break up. the east pakistan/banglis never considered themselves pakistanis, they were miles apart from west pakistan and they spoke bengali, not urdu!
they had no common stuff to be called pakistani, they were separated from india because of divide on the basis of hindu or muslim. so the muslim lands were called pakistan.
with the current scenario of pakistan breaking up, expect the minorities of pakistan to seek refuge in india, not muslims!
break up pakistan wont be like ussr leaving afghanistan in total chaos......sindhis want their own sindh, punjabis want their punjab, pathans want their pakhtoonistan and balochis want their independent.
ofcourse, the POK would be reunited with the rest of the state of Jammu & Kashmir.
WE INDIANS DONT WANT ANY LAND OF wasted PAKISTAN<<< MESSAGE TO PAKISTANIS.