About half the 2.6 million people displaced in Iraq after a three-year war with ISIS militants are children and persisting violence hampers efforts to ease their suffering, the United Nations said on Friday. While the Baghdad government last month declared victory over the organization after wresting back almost all the territory ISIS seized in 2014, persistent bombing and shooting attacks make it difficult to rebuild the lives of displaced people, according to UNICEF, the UN childrens agency. "We believe that as a result of the conflict, a lack of investment over the years, and the poverty ... that there are 4 million children now in need across Iraq," Reuters quoted UNICEF chief representative in the country Peter Hawkins as saying. He told a Geneva news briefing by telephone from Baghdad that 1.3 million of the 2.6 million displaced by the often devastating fighting with ISIS were children. "While the fighting has come to an end in several areas, spikes of violence continue in others - just this week, three bombings went off in Baghdad," UNICEF Regional Director Geert Cappelaere said in a statement. "Violence is not only killing and maiming children; it is destroying schools, hospitals, homes and roads. It is tearing apart the diverse social fabric and the culture of tolerance that hold communities together." Hawkins said UNICEF was also helping children of alleged ISIS militants now in detention by providing comfort and legal aid, and is trying to reunite those separated from their families, including those abroad. The issue of civilians uprooted from Sunni Muslim areas previously under control of ISIS militants has become the latest bone of sectarian-tinged political contention in Iraq. Sunni politicians are lobbying for postponing parliamentary elections due in May to allow the displaced to return to their hometowns to cast their ballots there. Shiite politicians including Prime Minister Haider al-Abadi insist on the vote taking place as planned on May 12. The United States called on Thursday for the elections to be held on time, saying that delaying them "set a dangerous precedent, undermining the constitution and damaging Iraq’s long-term democratic development".