ADDIS ABABA (AFP) - Sudan and South Sudan have hammered out a deal over oil, resolving a key part of a bitter dispute that brought the rivals to the brink of all-out war earlier this year. “The parties have agreed on all of the financial arrangements regarding oil,” said African Union mediator Thabo Mbeki, two days after a United Nations deadline for the neighbours to resolve arguments over oil and borders expired. Landlocked South Sudan said it had agreed to pay a pipeline transit fee of $9.48 per oil barrel to transport its crude through Sudan, a significant drop from Khartoum’s initial demands of up to $36 a barrel in fees.