Let me get this straight, Islamic Republic of Iran versus Islamic Republic of Pakistan... & their allah says they can kill each other? I can see the muslims blaming the jooooos, again
It's a Sunni/Shia thing.
Pakistan is Sunni, with a minority shia population.
Iran is almost all Shia, with a few Sunnis.
The Sunnis consider Shias heretics, like the Catholics consider Protestants heretics,in Christianity.
The differences in Islam and Christianity results in much harder and aggressive results in Islam. You kill heretics and Infidels in Islam.
Christianity is a much milder religion, love you neighbor no matter what his beliefs, be kind and helpful forgive and forget; so the Christian differences are not as volatile as those in Islam. - tom