I'll base anything on this. I do not know how accurate it is or even whether it is real.
O Americans, and O Europeans, the Islamic State did not initiate a war against you, as your governments and media try to make you believe. It is you who started the transgression against us, and thus you deserve blame and you will pay a great price
It promised to save them and support them. It promised to save them from the terrorists. While at the same time, America and its allies remained watching the plight of the Muslims upon the hands of the nusayriyyah. They watched with happiness seeing the killing, abuse, expulsion, and destruction, neither interested in, nor concerned about, the hundreds of thousands of dead, wounded, and imprisoned Muslims, and the millions displaced – including men, women and children – all over the world at the hands of the jews, crusaders, rāfidah
, nusayriyyah, hindus, atheists, and apostates, in Palestine, Yemen, Syria, Iraq, Egypt, Tunisia, Libya, Burma, Nigeria, Somalia, Afghanistan, Indonesia, India, China, the Caucasus, and elsewhere
O muwahhid, we call you up to defend the Islamic State. Dozens of nations have gathered against it. They began their war against us at all levels.
So O muwahhid... O you who believes in walā’ and barā’... will you leave the American, the
Frenchman, or any of their allies to walk safely upon the earth while the armies of the crusaders strike the lands of the Muslims not differentiating between a civilian and fighter? They have killed nine Muslim women three days ago by striking a bus transporting them from Shām to Iraq. Will you leave the disbeliever to sleep safely at home while the Muslim women and children shiver with fear of the roars of the crusader airplanes above their heads day and night?
How can you enjoy life and sleep while not aiding your brothers,
not casting fear into the hearts of the cross worshippers, and not responding to their strikes with multitudes more?
So yes, they do blame the actions of nation states for theirs.
History is right there in front of you, O Sunnis, so read it. How many times have the rāfidah conspired against the Sunnis, and what do they do to them when they gain power?
Yes, they also include the hundreds of years old conflict between Sunni and Shia as additional justification - in this case against Iran.
BUT (as the large number of Qu'ran quotes suggests) this is only additional justification and taken as evidence for their righteousness which ultimately derives from religious thought.