Saudi Arabia says national security is a red line as UAE forces asked to leave Yemen

By Yomna Ehab and Nayera Abdallah Dec 30 (Reuters) - Saudi Arabia said on Tuesday its national security was a red line, hours after an airstrike on Yemen's southern port of Mukalla by a Saudi-led coalition, and gave UAE forces 24 hours to leave, in Riyadh's strongest language against Abu Dhabi yet. As tension between the two Gulf oil powers reaches boiling port, the coalition struck what it