South Sudan's president says Sudan's recent actions amount to a declaration of war against the south.
South Sudan: Next Few Days 'Crucial' to Avoid All-Out War With Sudan
Sudanese military soldiers cheer during the visit of Sudanese President Omar al-Bashir (not seen) in Heglig April 23, 2012. (Reuters)
Sudanese military soldiers stand at a Sudan People's Liberation Army (SPLA) tank during the visit of Sudanese President Omar al-Bashir (not seen) in Heglig, April 23, 2012. (Reuters)
A Sudanese engineer points at the damage to an oil pipeline in a largely damaged oilfield in Heglig, April 23, 2012. (Reuters)
A SPLA soldier walks in a market destroyed in an air strike by the Sudanese air force in Rubkona near Bentiu, South Sudan, April 23, 2012. (Reuters)
Men look at a market destroyed by an air strike by the Sudanese air force in Rubkona near Bentiu, South Sudan, April 23, 2012. (Reuters)
The burnt body of a boy killed during an air strike by the Sudanese air force is covered with sheets in a market in Rubkona near Bentiu, South Sudan, April 23, 2012. (Reuters)
A man gestures at a market burnt in an air strike by the Sudanese air force in Rubkona near Bentiu, South Sudan, April 23, 2012. (Reuters)
A woman runs along a road during an air strike by the Sudanese air force in Rubkona near Bentiu, South Sudan, April 23, 2012. (Reuters)
A SPLA soldier walks in a market destroyed in an air strike by the Sudanese air force in Rubkona near Bentiu, South Sudan, April 23, 2012. (Reuters)
A South Sudanese soldier has a bullet removed from his leg in the Rubkona Military Hospital, April 22, 2012 in South Sudan. (AP)
A soldier of South Sudan's SPLA army holds his rifle near an oil field in Unity State April 22, 2012. (Reuters)