HE the Minister of State for Defence Affairs Dr Khalid bin Mohamed al-Attiyah received a written message from Saudi Deputy Crown Prince Mohamed bin Salman bin Abdulaziz, Second Deputy Premier and Minister of defence containing an invitation for the defence ministers of the Gulf Co-operation Council meeting with US Defence Secretary scheduled to be held in Riyadh during current April. The ambassador of Saudi Arabia to Qatar Abdullah bin Abdulaziz al-Aifan handed over the message when HE the Minister of State for Defence Affairs met him yesterday.