Millions of people have been displaced in the Lake Chad region as a result of a seven-year-long violent insurgency by Boko Haram terrorists. The Islamist outfit – which originated in Borno state, northeastern Nigeria – is blamed for the death of at least 20,000 people since its insurgency became violent in 2009.

Boko Haram is renowned for setting entire villages alight, kidnapping thousands of people and using civilians as suicide bombers. Although the group originally carried out attacks in Nigeria, the conflict soon spilled over into neighbouring states Cameroon, Chad and Niger.

As a result, in addition to its own military operation Lafiya Dole, Nigeria is now leading a regional offensive – consisting of 8,700 troops from Nigeria, Niger, Chad, Cameroon and Benin – against Boko Haram.

The offensive has scored some successes, such as the recapture of key territories and the release of thousands of civilians held captive by the group.

Nigeria's President Muhammadu Buhari, who vowed his administration would defeat Boko Haram – has repeatedly called for a global effort to tackle the humanitarian crisis in the Lake Chad water basin, which comprises Chad, Cameroon, Niger, and Nigeria, all areas affected by Boko Haram.

Nigeria Borno malnutrition Lake Chad
A young boy suffering from severe acute malnutrition lies on the ground at one of the Unicef nutrition clinics in the Muna informal settlement on the outskirts of Maiduguri, capital of Borno State, northeastern Nigeria Stefan Heunis/AFP

Displacement and food insecurity

The Lake Chad region, one of the poorest areas of the world, is witnessing a deep humanitarian crisis exacerbated by the negative effects of climate change. At least 2.6 million people have been displaced by Boko Haram and at least 6.3 million people are facing hunger.

"One of the biggest challenges when people are displaced, is that they are displaced away from their farms and away from the lake," Kathryn Achilles, humanitarian campaigns manager at Oxfam, told IBTimes UK.

"The military response has been to remove people from the areas that are at risk of attacks or where the military operations are ongoing. The situation is really exacerbated because it means that people don't have access to their own farms and to the lake."

Economy

Boko Haram tends to carry out attacks in crowded areas such as markets. As a result, the economy of some of the worst affected areas has been affected due to the closure of markets, a move that has disrupted businesses, but has also prevented people from buying essential goods.

For example, earlier this year, Cameroon's Far North region closed most of its markets along the border with north eastern Nigeria following deadly attacks blamed on Boko Haram.

Although some argued the decision would undermine people's businesses, authorities said the decision was made for security reasons as attackers often disguise themselves as traders and detonate explosives in crowds.

A similar decision taken by authorities to close crowded marketplaces was taken in Nigeria and Niger.

"More and more people have become almost entirely dependent on humanitarian assistance. Part of our response on food is to get cash for the people who are able to access markets and buy the food and the goods that they want, so that they can choose for themselves, as well as to keep those local markets running. We also have to complement that work directly though assistance," Achilles said.

"The UK, US and EU have provided a huge amount of funding, that's really welcome, but the number of people who need assistance right now is huge and we need to see a much greater engagement from the international community and from donors," she concluded.