Despite the magnitude of the disaster -- the most devastating cyclone to hit Asia since 1991, when 143,000 people died in Bangladesh -- France said the ruling generals in the former Burma were still placing too many conditions on aid.

"The United Nations is asking the Burmese government to open its doors. The Burmese government replies: 'Give us money, we'll distribute it.' We can't accept that," Foreign Minister Bernard Kouchner told parliament.

In New York, the UN Office for the Coordination of Humanitarian Affairs said it was prepared to make available a $5 million grant from its central emergency response fund.

But Rashid Khalikov, a senior UN aid official, appealed to Myanmar to waive visa requirements for UN aid workers trying to get into the country.

"Unfortunately we cannot tell you how many people are in need of assistance," he said. "We just clearly understand that it will probably be in the hundreds of thousands."

NOWHERE TO FLEE

Of the dead, only 671 were in Yangon and its outlying districts, state radio said. The rest were in the vast swamplands of the delta, which was hit by 190 kmh (120 mph) winds and an enormous storm surge.

"More deaths were caused by the tidal wave than the storm itself," Minister for Relief and Resettlement Maung Maung Swe told a news conference in the rubble-strewn city of 5 million, where food and water supplies are running low.

"The wave was up to 12 feet (3.5 metres) high and it swept away and inundated half the houses in low-lying villages," he said, giving the first detailed description of the weekend cyclone. "They did not have anywhere to flee."

As many as 10,000 people died in one coastal town alone.

Information Minister Kyaw Hsan said the military were "doing their best" but analysts said there could be fallout for Myanmar's rulers, who pride themselves on their ability to cope with any challenge.

"The myth they have projected about being well-prepared has been totally blown away," said analyst Aung Naing Oo, who fled to Thailand after a brutally crushed 1988 uprising. "This could have a tremendous political impact in the long term."

US President George W. Bush made a rare personal appeal to the junta to accept US disaster experts who have so far been kept out.

"Our message is to the military rulers," Bush said. "Let the United States come and help you, help the people."

He said he was prepared to make US naval assets available for search and rescue.

The White House later said the United States was committing $3 million through an aid agency to meet the most urgent needs, up from an initial emergency contribution of $250,000.

LITTLE FOOD, NO ELECTRICITY

Reflecting the scale of the crisis, the junta said it would postpone to May 24 a constitutional referendum in the worst-hit areas of Yangon and the delta.

But state TV said the May 10 vote on the charter, part of the army's much-criticized "roadmap to democracy," would proceed as planned in the rest of the Southeast Asian nation, which has been under army rule for the last 46 years.

Its political plans have been condemned by Western governments, especially after the bloody suppression of protests in September.

The information minister said the government had sufficient stocks of rice despite damage to grain stored in the huge delta, known as the "rice bowl of Asia" 50 years ago when Burma was the world's largest exporter.

But in the delta, even villages that managed to withstand the worst of the winds are running out of food and water.