Just like there are Pakistanis like you who don’t care about non-Pakistanis, there are Arabs who don’t care about non-Arabs. Simple as that.
Alhamdulillah there are people on both sides who care enough for the ummah to fight oppression with jihad of the sword or jihad of words.
Afghanistan, Chechnya, Bosnia, Iraq are some recent examples where both Pakistanis and Arabs went to fight a physical jihad.
Yes Pakistanis are in Iraq fighting and Arabs as you know are in Afghanistan fighting, Alhamdulillah!