Deputy Foreign Minister Khalid Al Jarallah said that despite “past wounds” — a reference to Iraq’s 1990 invasion of Kuwait — his country had a “moral, humanitarian and Arab” duty to support its neighbour.
In December, Baghdad declared victory over the group following three years of war.
The Kuwait conference, from February 12-14, will devote its second day to the role of the private sector and civil society organisations in reconstruction, Al Jarallah said.
Mehdi Al Alaq, the secretary general of Iraq’s Council of Ministers, said Baghdad and the World Bank had estimated reconstruction would cost at least $100 billion (Dh367 billion).
“We succeeded in returning half to their areas, but we need international support to return the rest of the displaced.”
The International Organisation for Migration said last week that by the end of 2017, more than 3.2 million Iraqis had returned home, but 2.6 million remained displaced.
Nearly one third are reported to have returned to houses that have been significantly or completely damaged, it said.
Alaq said heavy damage had also affected oil, electricity, transport, communications and manufacturing infrastructure as well as basic services such as water and sanitation.
Some Iraqis have complained of delays by central authorities in launching reconstruction efforts.
Baghdad has argued that the world “owes” it a programme similar to the United States’ multibillion dollar post-war Marshall Plan for Europe.