The United Nations has said that at least nine million people are in urgent need of aid in Nigeria’s northeast and neighbouring countries.
The UN Regional Humanitarian Coordinator, Toby Lanzer, said at least $559 million would be needed in the next four months to ease the crisis in Nigeria, Niger, Cameroon and Chad.
He said more than six million people were “severely food insecure” with 568,000 children acutely malnourished adding that the UN has appealed to Britain and other western governments for help.
Mr Lanzer said at the Chatham House in London: “With population growth of speed and nature, in an area where everyone is already poor, the environment is incredibly stressed.
“There is a never-ending stream of heavier violence, it is only natural to conclude that more people will migrate,” he said.
The Heads of State of the Lake Chad Basin and donor countries would meet on the margins of the annual United Nations General Assembly holding next week.
Meanwhile, the US President, Barack Obama, would meet with President Muhammadu Buhari on the sidelines of the Assembly.
US Deputy National Security Adviser, Ben Rhodes, disclosed that President Obama would hold separate sessions with the Nigerian President, Iraqi Prime Minister, Haider Al-Abadi and Colombian President, Juan Manuel Santos.
Vice President Yemi Osinbajo has urged countries of the Lake Chad Basin for greater cooperation for the protection of people displaced by the boko- haram insurgency in the region.
Speaking at a Regional Protection Dialogue in Abuja, United Nations Humanitarian agencies said the challenges in the Lake Chad Basin have gone beyond the need for food and shelter to include long term displacement concerns and fast demographics growth.
Notwithstanding the numerous complex protection challenges in the region, Vice President Osinbajo maintains that the Lake Chad Basin governments cannot afford to fail.
The United Nations Regional Humanitarian Coordinator for the Sahel, Toby Lanzer said state governments must be supported to prevent future implosion arising from displacements alongside current immediate needs.
The regional meeting, which brought together Heads of Government and security of Lake Chad Basin countries and donor countries, international and humanitarian organisations, aims to review common concerns about the protection of populations affected by the Boko Haram insurgency in the region, particularly refugees and the internally displaced.
The United Nations Refugee Agency (UNHCR), mainly involved in humanitarian intervention in the region, is weary of the new humanitarian challenges in the Lake Chad Basin, as victory mounts over the insurgency.
The UNCHR Assistant Commissioner For Protection, Mr Volker Turk stresses the need to pay attention to some issues, such as the fast demographic growth in cities harboring displaced persons and possible implosions that may arise from the long term challenge of displacements.
A UN official in South Sudan has spoken of an atmosphere of fear and desperation as violence continues in South Sudan.
Humanitarian Co-ordinator, Toby Lanzer, spoke about summary executions in Bor, in the restive state of Jonglei that has fallen to rebels.
He told the BBC he had witnessed “some of the most horrible things that one can imagine”.
“People were being lined up and executed in a summary fashion. This is done by people who are simply out of control,” Mr Lanzer said.
The UN mission in South Sudan has urged rival political leaders to agree a truce and open negotiations.
Meanwhile, the US said it had evacuated its citizens from Bor. Although its evacuation operation was initially aborted due to shots fired at its military aircraft, the US re-entered the region using civilian US and UN helicopters.
Clashes broke out between troops loyal to President Salva Kiir and others backing his former deputy, Riek Machar on Sunday night after President Kiir claimed to have quashed a coup attempt on his government by soldiers loyal to his former deputy.
Sudan suffered a 22-year civil war that left more than one million people dead before the South became independent in 2011.