South Korea and Saudi Arabia on Sunday signed a memorandum of understanding to expand defence cooperation, Seoul’s Defense Acquisition Program Administration (DAPA) said, as Seoul looks to ink further arms sales in the region. The agreement will see the two establish a joint committee to form a working group for weapons systems research and development as well as production to continue cooperation in defence, DAPA said in a press release on Monday. Defence minister Shin Won-sik, who was visiting Riyadh for the World Defense Show as part of a week-long trip to the Middle East, and his Saudi cou…