I just received an email from the State department that asks citizens to reconsider travel to Egypt due to terrorism. It urges those who do go to "...exercise increased caution in Egypt due to the Embassy’s limited ability to assist dual national U.S.-Egyptian citizens who are arrested or detained."
Do not travel to: 1) The Sinai Peninsula (with the exception of travel to Sharm El-Sheikh by air) due to terrorism. 2) The Western Desert due to terrorism. 3) Egyptian border areas due to military zones.
Country Summary: Terrorist groups continue plotting attacks in Egypt. Terrorists may attack with little or no warning, and have targeted diplomatic facilities, tourist locations, transportation hubs, markets/shopping malls, western businesses, restaurants, resorts, and local government facilities. Terrorists have conducted attacks in urban areas, including in Cairo, despite the heavy security presence. Terrorists have targeted religious sites, to include mosques, churches, monasteries, and buses traveling to these locations.
For more information, click here: https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/Egypt.html