UNIOSIL also facilitates liaison between the Republic of Sierra Leone Armed Forces and UNMIL for the conduct of concurrent patrols of the eastern border with Liberia to prevent the illegal cross-border movement of persons and arms.
联塞综合办还为塞武装部队和联利特派团之间的联络提供便利，以便在与利比里亚接壤的东部边界同时展开巡逻，防止人员和武器非法跨界流动。