The interview came after the UN's number two official in Iraq Lise Grande said that the United Nations is seeking four hundred million dollars from the US and its allies for a new reconstruction fund for Iraq.
"The aftermath [of the Iraq war] suggests that much more attention needs to be paid to putting the things back on track," Weiss said.
He remained downbeat about the global community's efforts to swiftly contribute to restoring Iraq.
"We are nowhere close to helping put the country back together," Weiss pointed out.
Speaking earlier in the week, Grande, for her part, noted that nations have to step up their efforts to rebuild the devastated provincial capital of Ramadi and other cities in Iraq.
Otherwise, she warned, progress made against Daesh in the region would be "undermined or lost."
Since 2014, the Pentagon has spent some 6.5 billion dollars on the military campaign against Daesh. The sum, which Washington contributed to stabilization efforts, is far fewer and is estimated at around fifteen million dollars.
Last week, US Secretary of State John Kerry acknowledged the need for more reconstruction aid and urged the international community to step up its support for the safe return of civilians to their homes.
