Aden International Airport
Fighting broke out over Aden International Airport on 19 March, with special forces loyal to ex-president Ali Abdullah Saleh attempting to seize the airport before they were defeated by troops and militiamen under orders from the Hadi administration. The following day, in an apparently unrelated incident, four suicide bombers detonated themselves in Sana'a mosques packed with Houthi congregants, killing at least 142. The Sunni Islamist group Islamic State of Iraq and the Levant's Yemen branch claimed responsibility.