Fresh clashes have broken out around South Sudan's second-largest city of Malakal. Sporadic fighting between the rebels and government forces broke out in Malakal a week ago, forcing officials to close the airport there. There is no official figure on the number of casualties. This is the latest in the struggle for the rebels to recapture the capital of the oil-producing Upper Nile region. According to the military, the rebels have been taking advantage of the government's decision not to wage an offensive against them. That's in line with South Sudan's efforts to implement the 2015 peace deal.