Isn't IS etc allies with the Iranians?
ISIS are Sunnis, while the Iranians are Shias. These 2 Muslim sects - Sunni & Shias had been fighting each other the moment prophet Muhammad died, even now, after 1400+yrs, for religious supremacy.
In 1979, when ambitious Iran Ayatollahs its religiously brainwashed military ruled Persian Iran, the Sunni Gulf States watched with dismay at Shia Persian Iran's subtle conquest of Sunni dominated lands in the middle east such as Lebanon, Syria, Yemen, etc, thru its non-state actors such as the expatriate Hizbollahs whom infiltrate into those badly managed nations & twisted minds.
When Iraq war happened, many ruffians were out of jobs, & thus an opportunity to create a group of misfits to counter Shia's expansion. Already a small group was radicalized that existed from a religion of peace that Islam is, to be twisted, misquoted & taken out of context, & with Sunni Gulf States financial support, that group grew from a small terrorist terror unit to become ISIS.
Fire is a good servant but a bad master, as the Sunni Gulf States realized to their regret - ISIS would no longer be servants, but masters of the Muslim faith, seeking to take over even their paymasters' country, including even the Holy City of Mecca.
ISIS - the Islamic State of Iraq & Syria, or ISIL - Islamic State of Iraq & Levante, intended to used the failed nations of Iraq & Syria as its springboard for global domination thru terror.
Fortunately, 7 Billion Humankind whom had been hiding under blankets, woke up & formed an International Coalition to destroy ISIS, which it did in the final battle of Raqqa, Iraq.
ISIS went underground, with little support, finances or troops, for years.
Sadly, someone or some group had
restarted financing ISIS recently, ignoring the fact that they are playing with fire....
ISIS had just claimed RESPONSIBILITY for the slaughter of hundreds of Shia Persians at Solemanis tombsite....