evidence: The small, remote oil town of Heglig, known as Panthou to South Sudan, is apparently located on northern Sudan's side of the 1956 border. However, older maps don't label the town at all, and until 2003 it was administered as part of Unity State in the Southern Sudan region. Then, just after the Sudan government and the future independent South had agreed not to share oil from north of the border, the government abruptly informed the southerners that Heglig in fact belonged to the north's Southern Kordofan state. [...] Minds in the south weren't changed so easily, and after two weeks of border clashes starting in late March of this year, South Sudan invaded Heglig. The southern government claimed they were only retaliating against earlier attacks by the north, but Sudan and the U.N. denounced it as an act of aggression. The South Sudanese army occupied Heglig from April 10-20, and advanced nearly as far as Kharasana (also Kersana, Karasana, Karasanah) before turning back - whether out of defeat or in order to stem international criticism is not clear. The front line has since moved back to Teshwin (also Tachiuen, Tishwin, Tashwin), an uninhabited spot on the 1956 border. Sudanese air strikes during the confrontation occurred deep within South Sudanese territory (PDF), including in Unity State's capital of Bentiu, as well as Panakuac (also Pan Akuach, Pana Kuach), a military position on the road to Teshwin.