Zarif made these remarks at the meeting of Patterns of Regional Order in the Post-Daesh World at the Faculty of World Studies at Tehran University on Saturday.
"Today, we are witnessing the territorial defeat of Daesh, but not the ideology of Daesh. Financial and intellectual resources contributing to the emergence of Daesh, which are regional and extra-regional, have not been destroyed and still persist," Zarif said.
"One of the main mistakes by the west is that they think Daesh is over...the circumstances leading to the appearance of Daesh in the region still exist...the first factor of which is the foreign intervention. Daesh is the brainchild of U.S. attack against Iraq and prior to that, Israeli oppression of Palestinian people."
Zarif also referred to the domestic factors as another reason for the emergence of Daesh and said domestic factors involved in the emergence of Daesh include the incompetence of the rulers, which has turned into the nation-state incompetence.
"Transferring Daesh members from the region to the outside of the region by Americans, which has happened in Hasakah, al-mayadin, Dayr al-zawr and other places, is a dangerous development, which has occurred regularly.Their communication network remains, their leaders remain and financial support of them remain, so we must expect this danger to appear everyday."
Daesh started its attacks in Iraq and Syria in 2014, occupying territory in the two Arab countries and establishing a so-called “caliphate.”
Soon, the Iraqi and Syrian troops — receiving advisory military help from Iran — started their operation to retake Daesh-held territory.
The terrorist group was gradually ousted from all the land it had occupied in these countries.