The head of the World Health Organization (WHO) says the humanitarian crisis caused by the war in northern Ethiopia is growing worse by the day, with up to seven million people in urgent need of food aid.

Dr Tedros Adhanom Ghebreyesus, who is himself Tigrayan, said the Tigray region had been under de facto blockade for almost a year, and basic services remain cut off - including electricity, banking and telecoms.

He said up to 400,000 people were living in famine-like conditions.