Zaidi Qasim
Prime Minister (20k+ posts)
simple....... Generals want to punish Nawaz Shareef as they are afraid that if he wins 2018 he will put Musharaf on Trial for Kargil Blunder.
That is exactly what is true. Just check to see how they are propping CH. Nisar , same Nisar who argued with NS to let Musharraf go. Other important thing is that NS should must return back if he wants to be relevant in Politics. He must decide when he will come, but he must come back in Pakistan .