"We're going to have to shut down our very small airlift operation until we get guarantees from the authorities," a furious World Food Programme regional director Tony Banbury said .
The shipments were enough to feed 95,000 people - a tiny fraction of the estimated 1.5 million destitute survivors of Cyclone Nargis, which ripped into the south-east Asian nation six days ago.
If you want to help Burma's cyclone victims, call the number at the bottom of this story
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Help us: Cyclone survivors wave to a helicopter carrying relief goods in the Irrawaddy delta
Waterworld: A shattered delta village is entirely surrounded by floodwaters covering fieldsDespite the desperate needs of the survivors, the generals are adamant that only they will distribute the emergency aid that is going in after the worst cyclone to hit Asia since 1991, when 143,000 people were killed in Bangladesh.
Thai Prime Minister Samak Sundaravej had to cancel a planned trip to Burma this weekend to ask the junta to open their doors just hours after he said he would go.
"After they said today they would not welcome foreign staff, there is no point of me going there," Samak said.
In a statement in the official media, the foreign ministry said Burma would accept "relief in cash and kind" but not foreign aid workers.
"Myanmar is not in a position to receive rescue and information teams from foreign countries at the moment," the statement said.
Emergency workers have warned the death toll could eventually top 500,000 if the delivery of aid is hampered further. Among those unaccounted for are 17 Britons.
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Children from the Kwak Mhue orphanage carry coffins of fellow orphans killed by the cyclone"It's a trickle from a tap at the moment and we need a fire hose. The scale of this crisis is enormous - thousands of people have gone without any help for six days."
Meanwhile, the country's military rulers appeared determined to play down the suffering. State TV news opened its evening bulletin with a report about Russia's new president and information about a referendum on the country's constitution.
The U.N. issued a stern rebuke to the junta, saying its refusal to let in foreign aid workers was "unprecedented" in the history of humanitarian work.
The Myanma Ahlin, a government-run newspaper, said Burma (known officially as Myanmar) was "not in a position to receive rescue and information teams from foreign countries at the moment".
It added: "At present Myanmar is giving priority to receiving relief aid and distributing them to the storm-hit regions with its own resources."
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A woman prepares food beside her cyclone-hit home in U Khai-Hlaing villageIt said one relief flight was sent back after landing in Rangoon yesterday because it carried a search-and-rescue team as well as media who did not have permission to enter the country.
A spokesman for the UN World Food Programme said the organisation had submitted 10 visa applications for aid workers to go into Burma but none had been approved.
In Britain, International Development Secretary Douglas Alexander told the Commons yesterday that mountains of aid were ready for Burma and immediate access to the country was vital.
Mr Alexander told MPs he had spoken to the Burmese ambassador about the need for "rapid access" and called on Burma to accept all offers of international help.
The minister did not say if any Britons were known to have died.
"This is a very grave crisis on a scale not seen since the tsunami of 2004. I want to assure the House that the British Government will continue to work to bring assistance and relief to the suffering people of Burma," Mr Alexander said.
The U.S. said it was "outraged by the slowness of the response" by Burma.
The junta also is preoccupied with holding a referendum tomorrow on a new constitution - expected to cement the military's grip on power.
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Catastrophe: Houses destroyed by Cyclone Nargis in a village in the Irrawaddy deltaU.N. Secretary-General Ban Ki-moon said he was seeking direct talks with the junta's senior general, Than Shwe, to persuade him to remove obstacles. A U.N. spokeswoman said Ban believed it might be "prudent" for the government to postpone the referendum.
While the junta dithers - apparently overwhelmed by the worst disaster in Burma's history - more than 1.5 million homeless people still await food, shelter and medicine, many crammed in Buddhist monasteries or out in the open.
Entire villages have been submerged in the Irrawaddy delta, with bodies floating in salty water.
At least 62,000 people are dead or missing - while it is feared that unless the countless bloated corpses are swiftly buried, disease could double the number of casualties.
Survivors have walked for days to find help. They are hungry, thirsty and vulnerable to disease ? but roads and bridges are blocked, making them difficult to reach.
Fights have broken out between survivors desperate for dwindling supplies of food and water. Some are breaking open coconuts for the water inside, while others are driven to eating dead fish.
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Deluged: Satellite photos show a village 16 miles south of Rangoon in 2002 and today. Buildings and trees are all gone, fields are flooded and the narrow canal is a massive riverThe Democratic Voice of Burma, an opposition news network based in Norway, gave graphic details of misery in the delta, where few foreign reporters have been able to reach because roads have been flooded and bridges washed away.
One film showed the message "We are all in trouble - please come and help us" written in Burmese on the tarmac in the village of Kongyangon.
A few feet away was another plea: "We're hungry."
In another village near the hard-hit delta town of Labutta, a woman lamented the loss of her eight-year-old son and three-month-old daughter.
"They are gone. They are gone," said U Thein.
Her neighbours said more than 100 of their friends and relatives were killed in Saturday's carnage. The sea surge and 120 mph winds ripped the tiny village apart, tearing down coconut groves and lifting the roofs from buildings including the primary school.
Scores of trees block pathways or balance precariously on top of the few buildings left standing.
Other than the cawing of crows and gentle weeping of the destitute, the only sound is the hammering of nails as villagers desperately try to rebuild their homes in the malaria-infested swamplands.
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Tragedy: The corpse of a victim of Cyclone Nargis in the flooded city of Bogalay"We have to get shelter. We have to get shelter," said San Myint. She and her brother have been sawing and hammering since dawn to repair their shattered home. "The mosquitoes are eating us at night," she says. "But we were lucky. We survived."
According to the state media 22,997 people died and 42,019 are missing from Cyclone Nargis.
Shari Villarosa, who heads the U.S. embassy in Rangoon, said the number of dead could eventually exceed 100,000 because of illnesses.
Today Japan said it would give £5 million in aid via the U.N., adding to the massive amounts of aid that has been pledged by foreign governments.
Thailand is hosting a virtual army of relief groups poised to rush into Burma with critical aid and experts once permission is granted.
However, few inside the country believe the junta will relent.
"Believe me, the government will not allow outsiders to go into the devastated area," said Rangoon grocer Joseph Kyaw.
"The government only cares about its own stability. They don't care about the plight of the people."
Thai prime minister Samak Sundaravej said today he would try to go to Burma on Sunday to persuade the junta to accept U.S. help.
But Thai military sources said the junta has told Mr Samak his Burmese counterpart is too busy to meet him.
A group of British aid agencies and charities launched an urgent appeal for help. The Disasters Emergency Committee said the need for aid was ? immediate and vast".
The committee, which includes the British Red Cross, Christian Aid, Oxfam and Save the Children, said money would be spent on immediate relief and long-term reconstruction.
Committee chief Brendan Gormley said: ?Our members are there and we need the UK public to show huge generosity to help them reach those thousands of people who have seen their lives and livelihoods uprooted."
• Call 0870 6060900 if you want to help victims of the Burma cyclone. The Disasters Relief Committee is coordinating aid efforts by 13 charities including Oxfam and the Red Cross.
Volunteers from Mercy Relief and Singapore Soka Youth Center pack relief supplies bound for cyclone-devasted Burma on Friday in Singapore. The supplies include tents, water purification tablets and medical supplies. (Stefen Chow/Associated Press)
In this photograph released by Democratic Voice of Burma on Friday, bodies of children killed during Cyclone Nargis lie in water in an unknown location in Burma. (str/Associated Press)
An elderly Burmese woman lies waiting for help in a hut in Kun Chan Gone township, near Rangoon, following last weekend's devastating cyclone. (Democratic Voice of Burma/Associated Press)
Burmese villagers work in a town devastated by last weekend's cyclone in Twantay township, southern Burma. (Associated Press)
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