Sahrawi children stand at the Awserd refugee camp in Tindouf, Algeria February 28, 2021. Picture taken February 28, 2021. REUTERS/Ramzi Boudina

A man gets a haircut at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A Sahrawi boy rides a bicycle at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A Sahrawi woman carries a child at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women wait to take part in a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women wait to take part in a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi soldiers carry their weapons as they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi people carry flags as they gather to watch a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women take part in a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina TPX IMAGES OF THE DAY

Sahrawi soldiers, wearing protective face masks, carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi people gather as they watch a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A Sahrawi woman soldier gets ready for a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A Sahrawi woman soldier, with henna dyed patterns on her hands, carries a weapon during a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers carry their weapons and they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi people gesture as they gather to watch a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi women soldiers get ready for a parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

Sahrawi soldiers carry their weapons as they parade at the Awserd refugee camp in Tindouf, Algeria February 27, 2021. Picture taken February 27, 2021. REUTERS/Ramzi Boudina

A United Nations translator holds a briefcase with listening equipment before a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, March 22, 2019. REUTERS/Denis Balibouse

Khatri Addouh, leader of the Sahrawi delegation and Frente Polisario, attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Khatri Addouh, leader of the Sahrawi delegation and Frente Polisario, attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Khatri Addouh, leader of the Sahrawi delegation and Frente Polisario, attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Khatri Addouh, leader of the Sahrawi delegation and Frente Polisario attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita attends a news conference after a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, attends a news conference after a roundtable at the United Nations in Geneva, Switzerland, December 6, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Moroccan Foreign Minister Nasser Bourita, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Khatri Addouh, leader of the Sahrawi delegation and Frente Polisario, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Khatri Addouh, leader of the Sahrawi delegation and Frente Polisario, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Algerian Foreign Minister Abdelkader Messahel, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Mauritania's Foreign Minister Ismail Ould Cheikh Ahmed, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Mauritania's Foreign Minister Ismail Ould Cheikh Ahmed, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Horst Koehler, Personal Envoy of the Secretary General of the United Nations to the parties to the conflict in Western Sahara, arrives for a roundtable on Western Sahara at the United Nations in Geneva, Switzerland, December 5, 2018. REUTERS/Denis Balibouse

Map of Western Sahara showing Polisario territory, and location of Guerguerat

Mohamed al Wali, 65, a Polisario fighter, stands next to a Sahrawi Arab Democratic Republic flag at a forward base on the outskirts of Tifariti, Western Sahara, September 9, 2016. REUTERS/Zohra Bensemra SEARCH “POLISARIO” FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

The Polisario Front soldiers drive a pick-up truck mounted with an anti-aircraft weapon during sunset in Bir Lahlou, Western Sahara, September 9, 2016. REUTERS/Zohra Bensemra SEARCH “POLISARIO” FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Polisario Front soldiers stand at an entrance of the fifth sector base in Bir Lahlou, Western Sahara, September 9, 2016. REUTERS/Zohra Bensemra SEARCH “POLISARIO” FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.