Than Shwe's visit is an attempt to win Phnom Penh's support for Rangoon's bid to join ASEAN. On the surface, the official agenda for the four-day visit is restricted to symbolically important but low-key events. In addition to meeting senior Cambodian officials, including co-premiers Prince Norodom Ranariddh and Hun Sen, the Burmese delegation will sign three tourism-related agreements. A Foreign Affairs Ministry source in Phnom Penh confirmed the two sides would discuss experiences regarding foreign investment and security, including how to deal with insurgencies. Burma and Cambodia do not have full diplomatic relations yet, and this week's visit is the next step towards this. But most significantly, the two governments will discuss their impending entry into the Association of Southeast Asian Nations (ASEAN). They currently have observer status on the body and both have applied for full membership by July next year. 'ASEAN will be on the agenda, no doubt about that, and Burma will ask Cambodia for support in the regional grouping,' said a well-informed Cambodian observer. General Than Shwe's visit comes at a time of mounting criticism over the Burmese Government's continued crackdown on pro-democracy forces. ASEAN diplomats admit the Burmese military's efforts to isolate opposition leader Aung San Suu Kyi have caused concern. Malaysian Foreign Minister Abdullah Badawi said on Tuesday that while ASEAN agreed in principle that Burma should become a full member, its heavy-handed treatment of internal opposition had left the body deeply split over the timing of the move. Both countries are also chronically underdeveloped and have been the target of attacks by the West over human rights - a predicament shared by Laos and Vietnam, with which Rangoon has also tried to cultivate close relations.