The UN's World Food Programme is to send emergency food supplies to Cuba and also appeals for funds to help Haiti in the wake of Hurricane Sandy.
It was "the worst catastrophe in 50 years in Santiago de Cuba," WFP spokeswoman Elisabeth Byrs said.
The WFP is also appealing for $20m (£12.5) to help some 425,000 Haitians affected by the storm.
Sandy caused widespread damage to infrastructure, crops and livestock in both Haiti and Cuba. (...)
Cuban President Raul Castro is in Santiago to oversee recovery efforts and has promised to remain until the power is back on.
In the city, much of the debris has been cleared from the streets and pupils have returned to classes, although not all are being held in actual school buildings.
According to initial government reports, Sandy damaged some 200,000 homes and affected more than a million people.
"We are especially concerned about the damage in the agricultural sector where tens of thousands of hectares of staple crops have been affected," said WFP emergency co-ordinator William Vigil in a statement.