Yemeni crisis

The Yemeni crisis began with the 2011–2012 revolution against President Abdullah Saleh, who had led Yemen for 33 years. After Saleh left office in early 2012 as part of a mediated agreement between the Yemeni government and opposition groups, the government led by Saleh's former vice president, Abdrabbuh Mansur Hadi, faced challenges in governing Yemen’s divided political landscape and addressing armed opposition from Al-Qaeda in the Arabian Peninsula and the Houthi movement Houthi militants that had been waging a protracted insurgency in the north for years.

In September 2014, the conflict escalated into a civil war when Houthi forces entered the capital of Sana'a and forced Hadi to negotiate a "unity government" with other political factions. The Houthis continued their advance and influence over government operations until, after forces aligned with the Houthis reportedly attacked his presidential palace and private residence, Hadi resigned along with his ministers in January 2015.

The following month, the Houthis declared themselves in control of the Yemeni government, dissolving the Parliament, and installing an interim Revolutionary Committee led by Mohammed al-Houthi, a cousin of Houthi leader Abdul-Malik al-Houthi. Hadi escaped to Aden, where he declared that he remains Yemen's legitimate president, proclaimed the country's temporary capital, and called on loyal government officials and members of the military to rally to him.

On 27 March 2015, the BBC reported that Hadi had "fled rebel forces in the city of Aden" and subsequently "arrived in Saudi Arabia's capital Riyadh" as "Saudi authorities began air strikes in Yemen". Since 2017 the separatist Southern Transitional Council (STC) has also fought against the government.