Mr. al-Bashir’s three decades of rule have been marked by famine and war, with the country dividing and a new nation, South Sudan, gaining independence in 2011. South Sudan and Libya, Sudan’s neighbor to the northwest, are each now gripped by armed conflict, raising the threat of widespread regional instability should Sudan also fall into civil war.
For months the security services have detained and attacked protesters in an effort to prevent the demonstrations from swelling, but in recent days, crowds opposed to Mr. al-Bashir have grown outside the compound in Khartoum that houses his residence and the military’s headquarters.
The sit-in marked a new stage of the protests, with numbers swelling far beyond those of previous demonstrations, organizers said. Their mood ranged from delight at the display of people power to fear that the authorities would soon crack down.
In recent days, soldiers protected demonstrators from other security services that were attempting to disperse them. Some protesters called on the regular army to oust Mr. al-Bashir, but analysts have warned that the military, which has waged war with rebel groups for decades and is accused of widespread abuses, is not seen as a unifying force across the country.
Mr. al-Bashir is the only active leader of a nation who faces charges before the International Criminal Court. As word of his possible ouster emerged, human rights groups called for him to stand trial over his role in crimes against humanity and genocide in the Darfur region.
“If the Sudan military’s important announcement is that Pres Bashir will finally step down, it should demonstrate its commitment to the rule of law and an end to mass atrocities by delivering him to the International Criminal Court to face charges,” Kenneth Roth, the executive director of Human Rights Watch, said on Twitter.