![A Saudi artillery unit fires shells towards Houthi positions from the Saudi border with Yemen April 13, 2015.](/sites/default/files/multimedia_images_2016/2016-yemen-arms-embargo-artillery.jpeg)
A Saudi artillery unit fires shells towards Houthi positions from the Saudi border with Yemen April 13, 2015.
© 2015 Reuters
A Saudi artillery unit fires shells towards Houthi positions from the Saudi border with Yemen April 13, 2015.