Ms Pearce also said, "We actually know the (Kurd) government has registered 300,000 people who have come in to the Kurdish areas. We have 200,000 in Dahuk and 100,000 in Erbil. We have 20-25,000 people in Suleymaniya."
An estimated 500,000 of the 2.5 million people in Mosul - 90 kilometres from Erbil - have fled the fighting. The Islamic State of Iraq and al-Sham (ISIS also known by its English acronym ISIL - the Islamic State of Iraq and the Levant) overran Mosul on June 10 in its lightning movement from across the Syrian border to the doorsteps of Baghdad.
Kurdistan - an autonomous region - prides itself on its unique identity of majority Muslim yet not Arab - and has used the fragility of the Iraqi Army to take over oil-rich Kirkuk. Kirkuk lies outside the Kurd boundary but is historically associated with the people.
"We provide a food basket for each registered family. We estimate a family of 5. We give them 62 kg of food, wheat, rice, pasta, lentils, canned food, salt and sugar. That should be enough to meet the caloric needs of a family for a month," Ms Pearce told NDTV. But, she admitted the human cost of the unfolding crisis needs to be focussed on. "You can't feed 500,000 people overnight. We don't even know how many of those 500,000 will need food. We are working out how many of them need our assistance and we will scale up our operations," she said.
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