Philippines’ defence secretary Delfin Lorenzana declared on Monday an end to five months of fierce urban warfare in a southern city held by pro-Islamic State militants, a battle that has marked the country’s biggest security crisis in years. With the military campaign terminated, residents of Marawi began their long trudge back to normalcy. Philippine President Rodrigo Duterte declared martial law on the southern island of Mindanao in May after about 100 Muslim fighters laid siege to a major city following a deadly gun battle with government forces.