After Huns it was divided into eastern and western parts . And Constantinople was conquered by sultan Muhammad fateh. But before all this Arabs defeated them in Arabian peninsula and Africa.
Pakistan stated that kSA security is the red line , and we all know that Arabs are more happy over their air superiority rather then engagement on the ground.
China and Pakistan both are strategic partners and friends. And as far as my knowledge China is developing j31 for themselves as well as their allies with their collaboration
Mar 23, 2015, SPA — Units of Special Forces of the Pakistani army arrived on Saturday at Taif Regional Airport to participate in a joint exercise with a Saudi Royal Land Forces’ duty contingent in the fifth edition of the exercise “Samsam”, which kicks off early next week in King Salman mountain...
Why are you so surprised ? Shia religion has nothing to do with Islam, and their are so many reasons ..I am sure you don't want me to write it down,,,,