31. 五个案例研究中有两个显示了区域办事处在支持制定跨界问题联合方案方面的有效作用。这涉及指导完成联合方案拟订进程，帮助国家工作队获得整个联合国系统更广泛的观点和专门知识。方框 2 详细介绍了其中一个案例研究。
31. Two of the five case studies demonstrated the effectiveness of the regional offices in supporting the development of joint programming for transboundary issues. This involved guiding the completion of joint programming processes and connecting country teams with wider perspectives and expertise from throughout the United Nations system. One of these case studies is detailed in box 2.