Egyptian security forces carry the casket of a policeman killed in north Sinai by Islamist militants in 2013. (Mohamed Abd El Ghany / Reuters) A series of coordinated attacks by a terror group affiliated with the Islamic State killed over 50 Egyptian soldiers in Sinai on Wednesday, unleashing what’s being described as “the fiercest clashes in decades in the peninsula.” The attacks took place in the Sheikh Zuweid area of north Sinai province, where a number of military checkpoints and installations were targeted.