Cairo is named for the Arabic al-Qahira, meaning ‘The Conquerer’ or ‘The Vanquisher’.
Likewise the Chi Ro, a symbol formed from two Greek letters, is said to have been adopted by the Emperor Constantine as a battle-standard after he received a vision of the symbol, accompanied by the words en touto nika, or “in this, win.” He did indeed win the battle.
Finally Cairo is the birthplace of Boutros Boutros-Ghali, the former Secretary-General of the United Nations.
Thus there is clearly some magical force of conquest influencing Cairo. Though whether this is because of the place’s location, or because of its name, I do not know.