Fighting is escalating in the north of Yemen where government forces have been battling Houthi rebels for months.<br /><br />In recent weeks, Saudi Arabia has been drawn into the conflict, vowing to continue air and artillery strikes across the border with the aim of establishing a buffer zone.<br /><br />Now, the Houthi fighters have released video footage which they say shows Saudi bombardment of the Doukhan mountains in the north of Yemen and captured Yemeni soldiers.<br /><br />Hashem Ahelbarra reports from north Yemen
