Yemen's Houthi movement has released dramatic footage it says shows drone attacks against Saudi military positions along the border regions of Najran, Jizan and Asir. The clips reportedly show Rajoum hexacopter drones tracking targets before striking military outposts, personnel gatherings, vehicles and fortifications. The claims come as Egypt makes a significant move in support of Saudi Arabia. Egypt's parliament has authorised President Abdel Fattah el-Sisi to take necessary measures to help defend the kingdom if Riyadh requests assistance.