Burma says nearly 78,000 people died in the cyclone
Burma's junta has declared three days of official mourning for the victims of Cyclone Nargis, 17 days after the storm struck, state television has announced.
The move came as Burma's closest ally, China, began three days of mourning for its own disaster, the Sichuan quake.
Analysts say Burma's move may indicate it now recognises the scale of the disaster it initially downplayed, and could be more open to outside help.
Earlier, Burma agreed at an emergency summit in Singapore to accept more aid.
Burma's secretive military rulers have been criticised for the slow response to the 2 May disaster, which left about 78,000 dead - more than double the number killed in China's earthquake.
Catalyst for change?
The BBC's South East Asian correspondent Jonathan Head says Burma's junta still seems implacably opposed to using the US, French and British navy helicopters aboard ships anchored just off their coast.
But the firm line they have taken until now, that they can cope without foreign expertise, is softening, he says.
Burmese state television announced that the national flag would be flown at half-mast during the mourning period, beginning on Tuesday.
"Because many people were killed by Cyclone Nargis, we have declared three days of mourning from 20 May to 22, and will lower flags to half-staff starting at 0900 (0230 GMT) on 20 May," the statement said.
The regime has so far allowed only a trickle of aid to reach the 2.4m people estimated to be in desperate need of help.
At a meeting of regional foreign ministers in Singapore on Monday, Burma promised to accept significantly more international aid to help cyclone victims.
Asean held an emergency summit to get Burma to accept foreign help
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.