Iraqi army requested the aid of the international coalition to conquer Tikrit. Despite the fact that Iran helps with artillery, ammunition and hundreds of military experts Iraqi army also needs air support.
The air force bombardment can help to fully liberate Tikrit from Islam militants in which 30,000 Iraqi soldiers participate.
The Kurdish autonomy in Iraq declared that the militants of "Islamic State" used toxic chlorine during the battles of Tikrit. They prove their accusation with a video shot in December and with the doctors' conclusions.
