AS a devastating conflict has unfolded across Sudan over the past year, the country's military rivals have sought support from foreign backers as they try to tip the contest in their favour. That backing risks widening and prolonging the war between the Sudanese armed forces, led by General Abdel Fattah al-Burhan, and the paramilitary Rapid Support Forces (RSF) headed by Mohamed Hamdan Dagalo, commonly known as Hemedti. The influence of outside players has loomed over events in Sudan since the overthrow of former leader Omar al-Bashir during a popular uprising five years ago. WHO SUPPORTS BURHAN? Burhan's clearest ally has been Egypt, which shares a border with…