Explosions and fires rocked Sudan’s main port city and wartime capital Port Sudan on Tuesday, a witness said, part of a days-long drone assault that has torched the country’s biggest fuel depot, damaging the most important gateway for foreign aid.

British maritime security firm Ambrey reported on Tuesday that the paramilitary Rapid Support Forces (RSF) had launched a drone attack on facilities at Port Sudan, targeting the container terminal and escalating a two-year-long conflict.