The Saudi Arabian-led intervention in Yemen began in 2015 to influence the outcome of the Yemeni Civil War. Saudi Arabia, spearheading a coalition of nine Arab states, began carrying out airstrikes in neighbouring Yemen and imposing an aerial and naval blockade on 26 March, heralding a military intervention codenamed Operation Decisive Storm ( `Amaliyyat `Āṣifat al-Ḥazm).