Land is sacred for pashtuns, it is a known fact. Only danda and state's power would force them to leave their lands, to be submerged and salinated.
Kalabagh is not harmful for all pashtuns, southren districts of KPK, the dry ones, would get benefit from dam. Punjab should try "divide and rule" formula on KPK.
The pashtuns of peshawer valley, where 40% population of kpk reside, would get adversely affected by it. A friend of mine says that if pathans of pekhawer valley are patriotic and loyal to pakistan, they have to give sacrifice of their fertile lands for greater good. Khud qurbani ka bakra nahi banay ga.