Khartoum mobilized its military after Sudan's attack Monday and South Sudan's counterattack Tuesday. The fighting could threaten the region's oil production, a Sudanese official predicts.
The soon-to-be separate countries will remain interdependent after South Sudan's July 9 independence because of intertwined economies and security concerns.
The thousands of Sudanese civilians who fled Abyei last month are wary about returning because they doubt the staying power of the most recent agreement to bring peace.
US efforts to both persuade and strong-arm Sudan's northern government into cooperation have been unsuccessful, illustrating a lack of leverage that is a result of inconsistent policies.
The latest United Nations report on violence in South Kordofan, Sudan, says that displaced persons were pressured into returning to their homes in the capital city, which they fled earlier this month.
While there are flaws with the idea of providing air defense capabilities to South Sudan, it may be the best option for protecting civilians, writes guest blogger David Sullivan from the ENOUGH advocacy group.
Firsthand accounts and the ethnic makeup of people displaced by violence in Sudan's border region indicate civilians may have been the target of attacks by northern forces.
Food, fuel, and water are all running dangerously low in Sudanese villages sheltering the tens of thousands of people who fled fighting around the disputed border town of Abyei.
The Sudan People's Liberation Army, a guerilla movement turned future national army, is struggling to make the transition and bring troops under control of the central command.
Khartoum says that the mission of the UN peacekeepers in Sudan will be finished when South Sudan becomes independent on July 9.
The leading opposition party in Southern Kordofan state says that the elections that brought the ruling party's candidate to power were fraudulent and the tension could lead to renewed conflict.
Northern Sudan's ruling party candidate won a gubernatorial election over a candidate from South Sudan's ruling party in a vote that party rejected as fraudulent.
The UN Human Rights Council reviews member states' records every four years. Sudan is up for review in 2011, giving the US and partners an opportunity to demand improvements.
The next two weeks will include a slew of elections on the African continent. Guest blogger Alex Thurston takes a look at the issues at play in some of the polls.
Rebel movements in South Sudan that have clashed with the South Sudanese army pose a greater threat to the fledgling state than even aggression from northern Sudan.
A new report from the left-leaning Norwegian People's Aid group highlights concerns in South Sudan as foreign investors buy up fertile farmland and potentially lucrative territory.
If Muammar Qaddafi falls, then West Africa would likely see the fire-sale of Libyan-owned businesses and an influx of refugees, including mercenaries.
African leaders in the Sahel – the coast-to-coast belt of countries just south of Libya – are afraid that Libya's unrest will disrupt the region's balance of power and put arms in the hands of rebel militias.
Violence in towns along Sudan's north-south border has prompted a flurry of accusations that are setting a poor stage for the country to peacefully split this summer.
South Sudan's army is waging a war against a rebel militia. The UN peacekeeping mission has stepped aside to allow the operation to unfold – potentially at a cost to civilians caught in crossfire.
George Athor, leader of a rebel militia in South Sudan, has broken his ceasefire with South Sudan's military, fracturing the future country at the time it most needs to be unified.