School dormitories are seen at the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A piece of cloth belonging to one of the students is seen on the ground after gunmen attacked and abducted students and teachers from the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A motorbike rides near a Government Science College sign in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A COVID-19 signpost is seen inside the school premises after students and teachers were abducted away from Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

Graffiti is seen all over the walls of the dormitories at the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A man rides a motorbike near the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

Discarded school furniture is seen within the premises of Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A classroom furniture is seen arranged inside the hall at the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

Classroom science lab equipment is seen in the laboratory at the Government Science College Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A pillow is left on the cupboard inside the dormitory of the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A boy plays with his brother close to a police armoured personnel carrier parked in Government Science College Kagara, Niger state, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

A classroom furniture is seen arranged inside the hall at the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

Graffiti is seen on the dormitory walls of the Government Science College in Kagara, Niger state, Nigeria February 18, 2021. REUTERS/Afolabi Sotunde

Donald Pols, Director of Milieudefensie, speaks as he leaves a Dutch appeals court after the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, and Donald Pols, Director of Milieudefensie, react as they leave a Dutch appeals court after the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, speaks as she leaves a Dutch appeals court after the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, and Donald Pols, Director of Milieudefensie, react as they leave a Dutch appeals court after the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

An activist of Milieudefensie poses for a picture outside a Dutch appeals court ahead of the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Donald Pols, Director of Milieudefensie, and Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, pose for a picture outside a Dutch appeals court ahead of the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, looks on as she arrives at a Dutch appeals court ahead of the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Donald Pols, Director of Milieudefensie, arrives at a Dutch appeals court ahead of the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Donald Pols, Director of Milieudefensie, and Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, react outside of a Dutch appeals court ahead of the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Channa Samkalden, lawyer of Nigerian farmers and Milieudefensie, arrives at a Dutch appeals court ahead of the verdict in a case over oil major Shell's responsibility for oil pollution in the Niger Delta, in the Hague, Netherlands January 29, 2021. REUTERS/Piroschka Van De Wouw

Mauritanian President Mohamed Ould Cheikh El Ghazouani and Niger President Mahamadou Issoufou, arrive for Ivory Coast's President inauguration ceremony in Abidjan, Ivory Coast December 14, 2020. REUTERS/Luc Gnago

Colonel Assimi Goita, leader of Malian military junta, looks on while he stands behind Niger's President Mahamadou Issoufou during a photo opportunity after the Economic Community of West African States (ECOWAS) consultative meeting in Accra, Ghana September 15, 2020. REUTERS/Francis Kokoroko REFILE-CORRECTING NATIONALITY

Niger's President Mahamadou Issoufou arrives at the airport for the Economic Community of West African States (ECOWAS) consultative meeting in Accra, Ghana September 15, 2020. REUTERS/Francis Kokoroko REFILE-CORRECTING NATIONALITY

A view of the coffins of the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, during a ceremony at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

A view of the coffins of the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, during a ceremony at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex,French Justice Minister Eric Dupond-Moretti and Junior minister for Tourism Jean-Baptiste Lemoyne pay homage to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger during a ceremony, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex (C) arrives with French Justice Minister Eric Dupond-Moretti (L) and Junior minister for Tourism Jean-Baptiste Lemoyne (R) to attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex, French Justice Minister Eric Dupond-Moretti and Junior minister for Tourism Jean-Baptiste Lemoyne attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech during a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech during a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech during a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech during a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech during a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex delivers a speech during a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex and French Justice Minister Eric Dupond-Moretti pay homage to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger during a ceremony, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex (C), French Justice Minister Eric Dupond-Moretti (L) and Junior minister for Tourism Jean-Baptiste Lemoyne (R) pay homage to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, during a ceremony at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex (C) arrives with French Justice Minister Eric Dupond-Moretti (L) and Junior minister for Tourism Jean-Baptiste Lemoyne (R) to attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, south of Paris, August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex arrives with French Justice Minister Eric Dupond-Moretti and Junior minister for Tourism Jean-Baptiste Lemoyne to attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, near Paris, France August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex arrives with French Justice Minister Eric Dupond-Moretti and Junior minister for Tourism Jean-Baptiste Lemoyne to attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, near Paris, France August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex arrives with French Justice Minister Eric Dupond-Moretti to attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, near Paris, France August 14, 2020. Stephane de Sakutin/Pool via REUTERS

French Prime Minister Jean Castex arrives to attend a ceremony in tribute to the six humanitarian aid workers from the French NGO Acted killed in an attack in Niger, at an airport lounge transformed into a funeral home at the Orly Airport, near Paris, France August 14, 2020. Stephane de Sakutin/Pool via REUTERS

Silymane Hiyan Hiyar, 53, an ex-rebel and leading member of the peace committee, speaks during an interview with Reuters at his home in Agadez, Niger October 31, 2019. Picture taken October 31, 2019. REUTERS/Zohra Bensemra

Nigerian army soldiers board a pickup to escort Nigerians heading north towards Libya as they leave Agadez, Niger October 29, 2019. Picture taken October 29, 2019. REUTERS/Zohra Bensemra

Silymane Hiyan Hiyar, 53, an ex-rebel and leading member of the peace committee, speaks during an interview with journalists at his home in Agadez, Niger October 31, 2019. Picture taken October 31, 2019. REUTERS/Zohra Bensemra

Silymane Hiyan Hiyar, 53, an ex-rebel and leading member of the peace committee, is pictured at his house's courtyard in Agadez, Niger October 31, 2019. Picture taken October 31, 2019. REUTERS/Zohra Bensemra

Silymane Hiyan Hiyar, 53, an ex-rebel and leading member of the peace committee, sits at his home's courtyard in Agadez, Niger October 31, 2019. Picture taken October 31, 2019. REUTERS/Zohra Bensemra

Silymane Hiyan Hiyar, 53, an ex-rebel and leading member of the peace committee, speaks during an interview with journalists at his home in Agadez, Niger October 31, 2019. Picture taken October 31, 2019. REUTERS/Zohra Bensemra

Silymane Hiyan Hiyar, 53, an ex-rebel and leading member of the peace committee, is pictured at his house's courtyard in Agadez, Niger October 31, 2019. Picture taken October 31, 2019. REUTERS/Zohra Bensemra

Algateig Mohamed, who fled Inates town with his family to escape jihadist violence, uses his mobile phone as he lies down with his son at his shelter in Niamey, Niger November 2, 2019. Picture taken November 2, 2019. REUTERS/Zohra Bensemra

Algateig Mohamed, who fled Inates town with his family to escape jihadist violence, gestures during an interview with Reuters journalists as he sits at his shelter in Niamey, Niger November 2, 2019. Picture taken November 2, 2019. REUTERS/Zohra Bensemra

Algateig Mohamed, who fled Inates town with his family to escape jihadist violence, uses his mobile phone as he sits with his son at his shelter in Niamey, Niger November 2, 2019. Picture taken November 2, 2019. REUTERS/Zohra Bensemra

French President Emmanuel Macron speaks during a Defense Council video conference on Niger at the Fort de Bregancon, France, August 11, 2020. Daniel Cole/Pool via REUTERS

French President Emmanuel Macron speaks during a Defense Council video conference on Niger at the Fort de Bregancon, France, August 11, 2020. Daniel Cole/Pool via REUTERS

French President Emmanuel Macron speaks during a Defense Council video conference on Niger at the Fort de Bregancon, France, August 11, 2020. Daniel Cole/Pool via REUTERS

French President Emmanuel Macron speaks during a Defense Council video conference on Niger at the Fort de Bregancon, France, August 11, 2020. Daniel Cole/Pool via REUTERS

Frederic de Saint-Sernin, vice CEO of ACTED (not pictured), Joseph Breham, lawyer of ACTED, Frederic Roussel, co-founder and development director of ACTED, and Marie-Pierre Caley, co-founder and CEO of ACTED, attend a news conference at the NGO headquarters in Paris, France, August 10, 2020. REUTERS/Benoit Tessier

Frederic Roussel, co-founder and development director of ACTED speaks with the media during a news conference at the NGO headquarters in Paris, France, August 10, 2020. REUTERS/Benoit Tessier