Jihadis don't have to physically 'take over' Pak- they already do. Pak's only claim to nationality is Islam, otherwise they'd be called Indians. Pakistan is an Islamic state, run by on Islamic theology, despite it's on-and-off trappings of pseudo-democracy. Fact is, no matter who runs the govt, Jihadis will always have the minds and hearts of Pakis - not only that, no Pak neta will break their nexus with Jihadists - they need them as surely as the sun rises in the east.