The title of the article is idiotic, I didn't even bother to read the article(?) wholly.
Since Jundallah/Jaish al-Adl, ISIS, etc are no sunnis (they are takfiris among wahabi and salafis), the article lost the grasp of truth even in the title. No sunni would destroy the tombs of Prophets and saints. No sunni would deem it OK to sell heroine and drugs to "non-Muslims" (this is what Jaish al-Adl does, claiming that shias are non-muslims, thus according to them there is nothing wrong in drug-trafficking into Islamic Iran), no sunni would target and kill fellow Muslims (be them sunni, shia, sufi, etc.). But the article tries to portray such monsters as sunnis. And it is not fair.
Thus, I find it sick when western media tries to portray this as a sectarian war, and even go further to describe ISIS, Jundallah, etc. like terrorists as sunnis.
I also disliked the articles baseless claims, such as "discrimination against sunnis in Iran" or even "no sunni mosque in Tehran", etc. lies which are false. Sunni minorities have more rights than the shias in Islamic Iran.
Please see:
Nasr TV - Sunnis in Iran - Nasr Clip - Nasr Production
Also please:
And also:
In summary, sorry to say it but the Islamophobic article(!) which you quoted has no truth in it.
As for your title on "Jihadist" armies surrounding Iran, it is true: both the millitary bases of American hegemony in neighbouring countries and the Yankee "Mujahids" surround Islamic Iran. And both will fail God-willing.