[WFP] N'djamena -- The United Nations World Food Programme (WFP) is today warning that life-saving programmes in Chad will grind to a halt in a matter of weeks without urgent funding. The stark warning comes as thousands of Sudanese refugees continue to stream across the border from Darfur, and as the rainy season looms, threatening to cut off road access for humanitarian deliveries to the camps in the east of the country - where around a million Sudanese refugees have sought shelter. WFP's assistance will be suspended for