By Sameer Hashmi and Ian Rose
BBC News, Dubai
BBC Middle East analyst
Egyptian archaeologists have made a stunning discovery of a lost city that dates back more than 3,400 years to the time of the pharaohs.
The find has been called one of the most important since the unearthing of the tomb of Tutankhamun.
The archaeologists were searching for a temple in the desert sands near the city of Luxor. They began finding something else; the walls of houses stretching away in all directions.
There were rooms filled with items that ancient Egyptians used in every day life. Rings and coloured pottery bore the seal of one of country’s most powerful pharaohs, Amenhotep the Magnificent.
In one neighbourhood a bakery was found, and evidence of food preparation for many people.
Elsewhere there were signs of industrial activity. It seems some residents were engaged in the making of decorations for tombs and temples.
The great find will provide huge amounts of information – perhaps even an answer to why the site was eventually abandoned by its people.
This discovery is something really substantial in the history of Egyptian archaeology.
The well-preserved city has been described as nothing less than "an Egyptian Pompeii".
BBC News, Kampala
Uganda and Egypt have signed an agreement to share intelligence amid escalating tensions in the region over the building of a mega dam by Ethiopia on a tributary of the River Nile.
In a statement, Uganda's army said the deal was reached in talks on Wednesday between senior military intelligence officials of the two countries.
"The fact that Uganda and Egypt share the Nile, co-operation between the two countries is inevitable because what affects Ugandans will in one way or another affect Egypt," the statement quoted the head of the Egyptian delegation, Major General Sameh Saber El-Degwi, as saying.
The dam has long been a source of tension between Egypt and Ethiopia, with then-US President Donald Trump warning last year that Egypt might blow it up.
Ethiopia sees the hydroelectric project as crucial for its economic growth and a vital source of energy.
But Egypt and Sudan, which are downstream, fear the $4bn (£3bn) dam will greatly reduce their access to water.
Uganda is the source of the White Nile, while the Blue Nile originates in Ethiopia.
Three-way talks, brokered by the Democratic Republic of Congo's President Felix Tshisekedi, collapsed on Tuesday.
Traffic stopped and people stood in silence to honour the six million Jews killed by the Nazis during World War Two.
BBC Afaan Oromo
Tech giant Facebook says that it has removed more than a dozen accounts and pages on Facebook and Instagram "from Egypt that targeted Ethiopia, Sudan and Turkey.
"We removed 17 Facebook accounts, six Pages, and three Instagram accounts from Egypt that targeted Ethiopia, Sudan, and Turkey. We found this network as part of our internal investigation and linked it to Bee Interactive, a marketing firm in Egypt," the social media company said.
It said the pages had violated Facebook policy against foreign interference and had been involved in "coordinated inauthentic behaviour".
The accounts have shared stories in the Amharic language which is widely spoken in Ethiopia. The content includes criticism of the massive dam that Ethiopia has built on a tributary of the River Nile as well as Turkey's foreign policy while sharing "positive commentary about Egypt," Facebook's said.
Ethiopia is in a standoff with Egypt and Sudan over the dam that is being built on the world's longest river.
The pages have combined followers of more than 300,000 and appear to have some engagement from Ethiopia.
''The people behind this network relied on a combination of authentic, duplicate and fake accounts, some of which used stock photos and went through significant name changes,'' the company says.
BBC Africa Daily podcastCopyright: Getty Images
One dam. Three countries. A big headache.
Ethiopia couldn’t be more proud of it, but the Grand Renaissance Dam has proven controversial.
The dam is being built on the Blue Nile River and, when complete, will be Africa's biggest hydroelectric power plant.
Problem is: both Egypt and Sudan fear the dam will limit their access to water.
“The Nile is the source of 90 to 95 per cent of the water usage in Egypt,” says Rehab Abd Almohsen, a science writer in in Egypt.
“Every drop of water from the Nile is very important because it’s the only source of fresh water that we have.”
Ethiopia, on the other hand, says the project is vital to its development.
“[Ethiopia has] one of the fastest growing economies in the last decade,” says the BBC’s Kalkidan Yibeltal in Addis Ababa. “And it wants this project to provide electricity to this growing economy.”
Negotiations between all three countries are going nowhere: the latest round of talks ended on Tuesday with no progress made.
So, how did we get there? And how can the deadlock ever be broken?
Find out in Wednesday’s edition of Africa Daily.
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The world through its media
Talks between Sudan, Egypt and Ethiopia in the Democratic Republic of Congo over the Nile dam row have collapsed, Sudan's private Al-Intibaha newspaper reports.
The countries failed to reach an agreement following days of negotiations in the DR Congo capital Kinshasa, with the Sudan delegation reportedly departing to Khartoum shortly after.
Sudan accuses Ethiopia of "intransigence" as the latter prepares to carry out a second filling of the dam.
But Ethiopia's Foreign Minister Demeke Mekonnen accused Sudan and Egypt of obstructing the talks and having a "rigid stance", according to a statement published by pro-government Fana website.
Mr Demeke added that talks are expected to resume in the third week of April and maintained that they should be held under the auspices of the African Union (AU).
Ethiopia has rejected a request by Sudan and Egypt on a negotiation team involving the UN, US, EU and the AU.
Decade-long negotiations between the three countries have failed to reach a final agreement on the filling and operation of the dam - which Ethiopia says is critical for development.
Sudan and Egypt have however raised concerns that the dam threatens their water supply.
By Frank Gardner
BBC security correspondent