epa04544349 Member of Shiite Houthi militia stand guard on a wall surrounding the old city of Sana’a during preparations for the celebration of the birth of Prophet Mohammed in Sana’a, Yemen, 01 January 2015. Preparations continue for the celebration of the birth of the Prophet Muhammed in the Yemeni capital Sana’a one day after a suspected al-Qaeda suicide bomber blew himself up at celebration held by Houthis in the the central Yemeni province of Ibb, killing an estimated 49 people and wounding dozens. EPA/YAHYA ARHAB