Pashtuns have ruled over the whole of India and Punjab also so any Pashtun who has read history may have some grandiose non-serious claims over Punjab or upto Attock.
Zia ul haq and his generals had a vision for a greater and more powerful Pakistan with Afghanistan as a strategic depth. He made the same mistake as Bhutto and crossed the limits imposed by the US.
Now, when the time has come to reap the benefits of the 40 year war, the present govt. has foolishly made all the Pashtuns in Afghanistan and Pakistan its and Punjab's enemy by forcing out Afghan refugees.
Insurgency was present in Pakistan at a much higher levels during Musharaff/Kiani eras and was tackled through better strategies.
To make common purpose with the Afghans, I have suggested making a Customs Union with Afghanistan, Iran and Turkey. A small and weak nation cannot make any impact in the world. It cannot even survive by itself. Both Bhutto and Zia paid the ultimate price by crossing the American limit imposed on them. To become a big power like India, we can make a joint cause with the Afghans, Turks and Iranians by making a Customs Union just like the European Union.
In this way we will get out of our economic problems and become a strong confederation with a say on World stage.
It is my personal opinion that if the Punjabis and Pashtuns combine, they can rule over this whole region. They already have experience together in the army and bureaucracy.