However , when negotiations failed to result in a settlement , Khartoum increased troop strength in the south to about 12,000 in 1969 , and intensified military activity throughout the region .
Government operations against the rebels declined after the 1969 coup .
When negotiations failed to result in a settlement , Khartoum increased troop strength in the south to about 12,000 in 1969 , and intensified military activity throughout the region .
Government operations against the rebels declined after the 1969 coup .