the world s youngest country is battling with some has described as biblical flooding that has displaced huns of thousands of people and runded livelihoods. the united nations south sudan s northern state of unity has seen more than 700,000 people affected by the worst flooding the region has seen in nearly 60 years. according to a government official, the historic flooding has also caused food shortages, malnutrition in children and the spread of diseases. our chief international correspondent clarissa ward is in south sudan with the story. reporter: just four months ago, this was a bustling town of 11,000 people. then, the floods came. biblical in scale. leaving it submerged underwater and largely cut off. as we arrive in ding ding, there are few signs of life. just some belongings stashed in the treetops. the only protection from the waters that have inundated much