Edited sentence: His Pashtunistan policy was to annex Pashtun areas of Pakistan, and he used this policy for his own benefit.Like all previous Afghan rulers since 1901, Daoud Khan also wanted to emulate Emir Abdur Rahman Khan and unite his divided country.To do that, he needed a popular cause to unite the Afghan people divided along the tribal lines (Pashtunistan policy) and a modern, well equipped Afghan army which would be used to surpass anyone who would oppose the Afghan government