This article and your contention is about the iran-ization of Iraq. Not minority persecution by jihadis. Speaking of minorities, you think the Iraqi Kurds are going to accept the ravings of Mad Mahmoud in Iran?
Actually, if you read the entire article posted by the OP, it covers much more than just the “iranization” of Iraq.
Another article supporting the OP’s: http://online.wsj.com/article/SB10001424052748703994904575646911886138950.html?mod=WSJ_hp_MIDDLENexttoWhatsNewsThird