Ethiopia

"Protecting these children, many of whom are refugees and internally displaced... must be a priority", said the UN's children's agency Unicef.

Despite deals with the Ethiopian government, humanitarian agencies say they are being denied access to Tigray.

Government forces have been battling Tigray fighters since 4 November.

The government says it is in control of the region and the conflict is over. But Tigray People's Liberation Front (TPLF) says it is still fighting on various fronts.

They say dozens of people are still missing since the landslide on Saturday night at the Koshe landfill. A resident said 150 people were there at the time.

A number of makeshift houses are now buried under tonnes of waste.

The area has been a dumping ground for Addis Ababa's rubbish for more than five decades.

Local resident Tebeju Asres told the AP news agency that the family's house had been swallowed by the landslide.

"My mother and three of my sisters were there when the landslide happened. Now I don't know the fate of all of them."

Some people died in a panicked stampede after police employed tear gas, rubber bullets and baton charges, they said.

Thousands had gathered for a religious festival in Bishoftu, 40km (25 miles) from the capital Addis Ababa.

Some reports said police responded after anti-government protesters threw stones and bottles.

Others said demonstrators were entirely peaceful.

Ethiopia's government said 52 people were killed in the stampede.

Prime Minister Hailemariam Desalegn blamed "evil forces" for the deaths in a national address on state TV.

"When all voices are being heard, when people know they are being included in the political process, that makes a country more successful," Obama said during a news conference with Ethiopian Prime Minister Hailemariam Desalegn.

Grave concerns remain, however, over political freedoms in this nation of more than 90 million — Africa's second largest — and opposition figures fear that the visit, coming on the heels of an improbable 100 percent ruling party win in elections, will give international legitimacy to a repressive government.