Escalating attacks in Port Sudan have plunged a humanitarian lifeline into crisis, deepening fears of a prolonged war.

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.

War-weary civilians have looked up at a blackened sky in Port Sudan this week as the two-year war they had fled finally reached their once-safe haven on Sudan's Red Sea coast."Panic is setting in, people are terrified,