A French crew has begun to repair two undersea cables in the Mediterranean that were severed on Friday, disrupting internet and phone communications to Europe, Asia and Africa.
A robot submarine will find the ends of the cables on the seabed and bring them to the surface to be reconnected.
They were cut somewhere between Sicily and Tunisia, probably by an anchor.
Egypt says it has been able to restore most of its communications by rerouting services, but other parts of the Middle East remain badly affected.
Experts have warned that it may be days before the fault is fixed and that the flow-on effect could have serious repercussions for regional economies.