(FILES) – A file picture taken on January 1, 2013 shows jet fighters of the Saudi Royal air force performing during the graduation ceremony of the 83rd batch of King Faisal Air Academy (KFAA) students at the Riyadh military airport, in the Saudi capital. Saudi warplanes launched strikes on Huthi rebels in Yemen on March 26, 2015, as the kingdom launched a 10-nation coalition to check the rebels’ advance and prevent the fall of Yemen’s embattled President Abedrabbo Mansur Hadi. AFP PHOTO / FAYEZ NURELDINE