Egypt’s army chief is warning ongoing political turmoil amid mass protests against President Mohamed Morsi could cause the Egyptian state to collapse. General Abdel Fattah al-Sisi issued the warning Tuesday after residents in towns along the Suez Canal openly defied a curfew imposed by Morsi, flocking to the streets as military troops watched on. At least two men died in clashes in Port Said, adding to dozens killed in recent days. Protests erupted around the second anniversary of the Egyptian revolution that ousted Hosni Mubarak. But in Port Said, the unrest was fueled by death sentences handed down Saturday for 21 city residents accused of playing a role in a deadly soccer riot last year.