There can't be many priests who celebrate mass in an empty church. But the Archbishop of Mosul, Mgr Najeeb Michaeel, has little choice. Most of his flock have fled persecution, and a handful who remain are thinking about a new life overseas.

Before Islamic State fighters swept across the Nineveh plains, Mosul was home to 2,500 Chaldean and Syriac families.

The war shattered city has been liberated, but fewer than 50 families are left.

"Four or five people will attend mass if I'm lucky, but on some Sundays recently no one turned up, said the Archbishop.