Vice President Pence arrived in Cairo hours after Congress and President Trump failed to avert a partial federal closure.
The attacker sneaked into a hotel by swimming from a nearby beach.
The move suggests ISIS is planning further attacks against Christians in the North African country.
A Vatican official said Egypt has promised to do all it can to protect the leader of the Catholic world.
With Obama in the rearview, here's what to expect from Abdel Fattah el-Sissi's trip to the White House.
Mubarak was the first leader to face trial after the Arab Spring uprisings.
The beaches of southern Sinai are popular with Israelis.
Authorities arrested Ezzedine Khaled for a video satirizing the sale of two islands to Saudi Arabia.
Egyptian authorities suppressed demonstrations about island deal.
Unidentified militants planted an improvised explosive device on the road and later remotely detonated it.
Actor and comedian could receive six months in jail for mocking police on revolution anniversary.
Security forces conducted raids on government opposition activists ahead of the Arab Spring anniversary.
Security increases as Western countries speculate bomb downed the airliner.
Having examined the whole picture, Philip Hammond says, the militant group's claims of responsibility might be credible.
A militant group affiliated with Islamic State in Egypt claims responsibility.
Two Egyptian soldiers also were killed in clashes with Islamists in restive region.
The law was extended yesterday as Sisi tries to combat smuggling between Sinai and Gaza.