Fleeing atrocities at home, 70,000 Sudanese now live in South Sudan's sprawling Yida refugee camp.
Sudan's President Omar Hassan al-Bashir vowed today to retaliate against Israel for a recent alleged airstrike. The Monitor explains the background of the dispute.
The Sudanese government blames Israel for an explosion at a munitions plant in Khartoum. Israeli media have reported the factory is owned by Iran's Revolutionary Guard and made arms for Hamas.
A prison sentence for a Congolese warlord. A court ruling for a Chadian dictator to be tried for torture. Some 67 years after Nuremberg trials, international courts and tribunals are making their mark.
The government faces new pressures from the loss of territory and oil revenue to South Sudan, but the push for an Islamic constitution has much older roots.
President Bill Clinton ordered a cruise missile strike on the pharmaceutical factory in Khartoum in 1998; the Sudanese still haven't forgotten.
After weeks of fighting, in which South Sudan took out one of Sudan's last remaining oil fields, the two countries are returning to the negotiation table, under African Union mediation.
The six month rainy season gives time for Sudan and South Sudan to make progress in resolving differences. But the wet weather will strain the sanitation systems in refugee camps.
At this time last year, South Sudan was preparing to become Africa's newest nation. Now the dispute between South Sudan and Sudan may turn both into the latest failed states.
The UN Security Council voted to impose economic sanctions on Sudan and South Sudan if they don't stop fighting immediately and restart mediation over oil revenues and borders.