920 AH
Chaldiran
Selim I's guns defeat Shah Ismail at Chaldiran. The Sunni Ottomans and the Shia Safavids fight on and off for more than a century.
How it touches Islam The border they finally fixed at Zuhab in 1639 still roughly divides Turkey and Iraq from Iran.
And if two factions among the believers should fight, then make settlement between the two. But if one of them oppresses the other, then fight against the one that oppresses until it returns to the ordinance of Allah. And if it returns, then make settlement between them in justice and act justly. Indeed, Allah loves those who act justly.
Quran 49:9
Source: History ·