A still image taken from a video distributed by Yemen's pro-Houthi Al Masirah television station shows what it says was the launch by Houthi forces of a ballistic missile aimed at Riyadh's King Khaled Airport on November 4, 2017. © 2017 Reuters

A still image taken from a video distributed by Yemen's pro-Houthi Al Masirah television station shows what it says was the launch by Houthi forces of a ballistic missile aimed at Riyadh's King Khaled Airport on November 4, 2017. 

© 2017 Reuters