The United Nations says that 22 million people in the Horn of Africa are at risk of starvation – a rise of nine million since the start of the year.
The World Food Programme says the failure of four consecutive rainy seasons has pushed populations in Kenya, Ethiopia, and Somalia to the brink of famine.
More than a million people have left their homes in search of food and water.
The WHO says the world must act now to prevent catastrophic hunger.
An appeal for funds in January has faltered, with the war in Ukraine diverting donations and preventing normal grain shipments.