Secretary-General of ASEAN Dr Kao Kim Hourn discussed current regional security challenges and means to enhance ASEAN defence cooperation with the Minister at the Prime Minister’s Office and Minister of Defence II of Brunei Darussalam Pehin Datu Lailaraja Major General (Retd.) Dato Paduka Seri Haji Awang Halbi bin Haji Mohd Yussof at the 10th ASEAN Defence Ministers’ Meeting Plus in Jakarta.