Bin Salman leads the Saudi-led intervention in Yemen against the Houthi rebels, who in 2015 seized Sana'a and ousted the Saudi-backed Hadi government, ending multilateral efforts towards a political settlement following the 2011 Yemeni uprising.[151][152][153] Coalition airstrikes during the intervention have resulted in thousands of civilians killed or injured,[154] prompting accusations of war crimes in the intervention.[155][156][157] Following a Houthi missile attack against Riyadh in December 2017, which was intercepted by Saudi air defence, airstrikes killed 136 Yemeni civilians and injured 87 others in eleven days.[158][159] In August 2018, the United Nations reported that all parties in the conflict were responsible for human rights violations and for actions which could be considered war crimes.[160]