South Sudan restarted oil production Saturday, ending a 15-month bitter row with former civil war foe Sudan and marking a major breakthrough in relations after bloody border clashes last year. “The oil is now flowing,” South Sudan oil minister Stephen Dhieu Dau shouted as he flicked a switch to restart production at a ceremony in the Thar Jath field in Unity state. The oil production and its associated revenue are urgently needed in order to finance and stabilise the new country.