700 are stranded without food and water . U.N. : Preliminary information indicates at least $ 15 million needed for relief aid . In the past few days , floods in the southern African nation killed Tens of thousands people .
Tens of thousands are stranded without food and water . U.N. : Preliminary information indicates $ 15 million needed for relief aid . In 2000 , floods in the southern African nation killed 700 people .