CAIRO — A series of simultaneous bombings targeting security facilities in the Sinai killed at least 26 people Thursday night, suggesting that the Egyptian government’s sweeping campaign of home demolitions, nighttime curfews and geographic isolation has failed to head off the budding insurgency there.
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In the 18 months since the military ousted President Mohamed Morsi of the Muslim Brotherhood, the area has become the center of a campaign of retaliatory attacks on Egyptian security forces that has become the most significant challenge to rule of his successor, President Abdel Fattah el-Sisi.
