But critics say the government fears that allowing too many players to bring food into the country could dilute the political mileage it is getting from food distribution, particularly in rural areas where in some cases its GMB is the only source of food.
While no deaths from hunger have been officially reported so far, the UN says Zimbabwe's food crisis is deteriorating fast, with 600 000 children - or 30 percent of under fives out of two million - already vulnerable to nutritional problems.
Poor rains last season have caused food shortages across southern Africa, but in Zimbabwe - the epicentre of the food crisis - the government's chaotic and often violent drive to seize land from large-scale producers has destabilised the key agricultural sector.
While no deaths from hunger have been officially reported so far, the UN says Zimbabwe's food crisis is deteriorating fast, with 600 000 children - or 30 percent of under fives out of two million - already vulnerable to nutritional problems.
Poor rains last season have caused food shortages across southern Africa, but in Zimbabwe - the epicentre of the food crisis - the government's chaotic and often violent drive to seize land from large-scale producers has destabilised the key agricultural sector.