The curious case of Bible #1, and how much we actually know about it.
Much of Sinai is almost beyond Egyptian state control altogether.
Israel is deporting thousands of Eritrean asylum seekers to Rwanda, while in the US, many face being sent back to the country they fled.
Investigating an air crash is a delicate and complex task at the best of times – and Flight KGL9268 came down in one of the world's most difficult regions.
Whatever caused the crash of a Russian airliner over the northern Sinai, it's finally brought the world's attention back to a critical security crisis.