YANGON, Myanmar (AP) - An aid agency is warning that thousands of children in Myanmar will starve to death within two to three weeks if they don't get food quickly.

It's been more than two week's since the Southeast Asian nation suffered a devastating cyclone.

Save the Children fears "many children in the affected areas are now suffering from severe acute malnourishment." The agency says that's the most serious form of hunger.

An increasingly angry international community is pleading with Myanmar's military rulers to approve an all-out effort to help survivors. The generals have refused to take phone calls from U.N. Secretary-General Ban Ki-moon (bahn kee-moon). They haven't answered two letters he's sent. And today, he's sending the U.N.'s humanitarian chief there to try to find out what's going on.

The Myanmar regime insists it's handling the calamity, which by its own estimate has killed 78,000 people, with tens of thousands more missing. But this weekend, it's prevented a French navy ship loaded with supplies from unloading.

Britain's Prime Minister Gordon Brown is calling the Myanmar government's response "inhuman."

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