0437 GMT January 19, 2019
He made the remarks in a meeting with Chairman of Iran's Expediency Council Ayatollah Akbar Hashemi Rafsanjani.
The official lauded Iran's support for the Iraqi nation against Daesh, adding that use of chemical weapons by ISIS threatens security of Iraq, the region and the world.
He expressed regret over spread of human catastrophe in Iraq because of terrorist activities and financial crisis resulted from the decline in oil revenues.
The UN envoy stressed on protecting Iraq's sovereignty and national unity.
He urged the international community to help Iraqi people to fight Daesh as enemy of mankind.