A U.N. official says Gaza reconstruction is moving at a "snail's pace" and that at this rate it would take 30 years to rebuild the damage from last year's Israel-Hamas war.

Roberto Valent, the new area chief of a U.N. agency involved in reconstruction, blames the slow flow of foreign aid and Israeli curbs on the entry of construction material to Gaza.

Israel and Egypt have enforced a Gaza border blockade since a takeover of the territory by the Islamic militant Hamas in 2007. After the 2014 war, Israel allowed some cement and steel into Gaza under U.N. supervision to keep it away from Hamas militants.

Valent told The Associated Press on Wednesday that the system is too slow. He says "the real solution is the lifting of the restrictions."