Sudan reaches historic crossroads
24 September 2010 Last updated at 06:24 BST
In just over three months the southern Sudanese will vote on splitting away from Sudan, a consequence of a peace deal that ended a long north-south civil war.
US President Barack Obama is due to attend a special meeting on Sudan at the United Nations in New York.
The BBC's James Copnall reports from Khartoum in Sudan.