President of Bangladesh Institute of Peace and Security Studies (BIPSS) Major General (Retd) ANM Muniruzzaman on Thursday said Bangladesh needs to remain very careful keeping its national interest protected as the strategic landscape in the Asia Pacific region is rapidly changing.   "Strategic landscape is getting changed rapidly. We need to observe it very carefully," he said at a virtual dialogue titled “Bangladesh-China Development Cooperation: Experience and Outlook”. The objective of the event was to review Bangladesh’s economic relationship with China and discuss the outlook for future bi-lateral partnership through investment and trade.