If the PMLN relaunches its attacks on the Establishment and its leaders by name, there is bound to be hand-wringing and soul searching. At the least, the Establishment will increase pressure on Imran Khan to focus on delivering good governance instead of screwing the opposition. This will aggravate fissures. Mr Zardari too cannot possibly relish the prospect of alienation from allies and hostility from opponents, writes Najam Sethi