An international conference on reconstruction of one of Libya’s coastal cities, decimated in a fatal flood in September, began Wednesday, one of Libya's rival governments announced. In the early hours of Sept. 11, two dilapidated dams in the mountains above the eastern city of Derna collapsed, sending floodwaters roaring down the Wadi Derna river and through the city center, sweeping away entire city blocks. Government officials and aid agencies have given estimated death tolls ranging from more than 4,000 to over 11,000.