Saudi Arabia-Yemen
This barrier, started in 2003, extends along part of the 1,800-kilometer border between Saudi Arabia and Yemen. It is a 3-meter-high structure filled with concrete and equipped with electronic devices. The construction faced opposition from the Yemeni government, which claimed it violated the 2000 border treaty, leading to a suspension in 2004 after Egyptian and U.S. diplomatic intervention. Riyadh accused Yemeni smugglers of supplying explosives to radical Islamists, related to the 2003 Riyadh bombings.
In 2008, a new section was built to control the influx of Ethiopian and Somali migrants and refugees crossing Yemen into Saudi Arabia. Since 2017, Saudi Arabia has detained and forcibly repatriated thousands of Ethiopian migrants who crossed the border. By 2022, more than 30,000 migrants were still being held in deplorable conditions. Amnesty International and other organizations condemned these practices, citing severe human rights violations. Tensions between the two countries escalated, especially after Saudi intervention in Yemen in 2015, which included partial dismantling of the barrier.