A bombing during Sunday Mass at a chapel attached to Cairo's main Coptic cathedral killed at least 25 and wounded some 50 others Dec. 11.  Most of the victims are reported to have been women and children. St Mark's Cathedral is the main institution of Egypt's Coptic Christians and home to the head of the church, Pope Tawadros II.  The blast coincided with celebrations of Mawlid, a national holiday in Egypt marking the birth of Islam's Prophet Muhammad. No group has yet claimed responsibility for the attack, the deadliest targeting Egypt's Christians since a New Year's Day bombing at a church in Alexandria in 2011 that killed 21 people. President Abdul Fattah al-Sisi has condemned the Cairo attack and declared three days of national mourning. There are around 9 million Coptic Christians in Egypt, around 10% of the country's population. (EuroNews, AfricaNews, Crux, Dec. 11)