His Highness The Amir Sheikh Tamim bin Hamad Al Thani attended a luncheon banquet held by his brother HRH Crown Prince, Deputy Prime Minister and Minister of Defense of the sisterly Kingdom of Saudi Arabia Prince Mohammed bin Salman bin Abdulaziz Al-Saud, in honor of Their Majesties, Excellencies and Highnesses, the state leaders and heads of delegations participating in the Jeddah Security and Development Summit, at the King Abdulaziz International Conference Center in Jeddah today.