As much of the world's attention has been focused on the port city of Derna since last week's flooding in eastern Libya, other cities are mired in the resulting damage.Ahmed Saleh, a 34-year-old civil engineer clad in a traditional white jalabiya, is still in shock at the scale of the destruction in his home city, Susa.More than 10 days after the deadly storms lashed eastern Libya, he says they still have great difficulty accessing drinking water after a desalination plant was badly damaged.