Morocco’s Strategic Corridor in the Sahara: Military Expansion and Regional Power Dynamics

Operational Development

Morocco is preparing to extend its presence into the UN-designated buffer zone east of the defensive berm. The project is tied to the near-complete construction of a road linking Es-Semara to Bir Mogrein, Mauritania. Plans call for the creation of a corridor 10–15 kilometres wide, secured by Moroccan forces.

The initiative aims to achieve two immediate goals:

• Securing the new transit artery and ensuring uninterrupted connectivity to Mauritania.
• Restricting the operational freedom of the Polisario Front, whose activity has long depended on the open desert zones east of the berm.

Political Context

The move comes amid evolving diplomatic narratives. UN envoy Staffan de Mistura has increasingly presented the Western Sahara dispute as primarily a Morocco–Algeria conflict, effectively reducing Polisario’s political weight. This creates space for Rabat to act more assertively in disputed zones.

For Mauritania, the new corridor has both opportunity and risk. Enhanced infrastructure could improve trade links, but Nouakchott also faces new pressure: any Polisario operations spilling across its borders would test its ability to secure its desert territories.

Military Dimension

The Royal Armed Forces have maintained heightened alert since the 1991 ceasefire. Morocco demonstrated its rapid deployment capacity during the El Guerguerate operation in 2020, reopening a key crossing blocked by Polisario.

The corridor project, however, highlights ongoing capability requirements. Specifically, Morocco seeks mine-resistant vehicles (MRAPs) to protect troops from IED threats, but export restrictions from Western partners continue to limit acquisition. Despite this, the army is assessed as ready to move once royal authorization is granted.

Strategic Implications

• For Polisario: The corridor would drastically limit manoeuvrability, confining operations to areas near Algeria and northeast Mauritania.
• For Algeria: Any Moroccan expansion risks being read as a provocation, likely prompting countermeasures through political pressure or support to Polisario.
• For Mauritania: The project forces Nouakchott into a delicate balancing act, caught between deepening economic ties with Rabat and maintaining its neutrality in the regional standoff.
• For the UN: A Moroccan advance into the buffer zone challenges the credibility of international monitoring mechanisms and further complicates mediation.

Conclusion

Morocco’s potential corridor east of the berm is more than an infrastructure project: it represents a deliberate recalibration of the Western Sahara balance of power. By combining physical control of the buffer zone with growing diplomatic leverage, Rabat seeks to consolidate its claim while narrowing Polisario’s space for action.

If successful, this initiative will reshape not only the operational dynamics on the ground but also the diplomatic posture of Mauritania and Algeria, while testing the resilience of UN mediation.