“There is a sense that [countries] are losing patience with Myanmar,” said Dylan Loh, an assistant professor in foreign policy at Nanyang Technological University (NTU).

Among the key conditions were the immediate cessation of violence and establishing “constructive dialogue among all parties”.

Loh, the assistant professor, said the summit could see Asean – of which Myanmar is a part – take “practical steps” to further sanction the military authorities. This could take the form of barring the appearance of junta officials at a wider range of regional meetings instead of just ministerial-level ones.

“How far and how hard they want to push [for] the outright suspension of Myanmar remains to be seen,” Loh added. “I would imagine that they do not want to push the button yet.”

There have been growing calls in recent months, including from Human Rights Watch, for Asean to suspend Myanmar’s membership to the bloc entirely.

Chong Ja Ian, associate professor of political science at the National University of Singapore, agreed that further limiting Myanmar’s participation in the bloc’s gatherings was possible but added that Asean lacked leverage and resources to entice or pressure the junta to cease their attacks and begin negotiations.

Last month, there were reports of the Myanmar military conducting air strikes on a concert held by a major ethnic rebel group, resulting in around 50 deaths. A local monitoring group estimated that more than 2,300 people have been killed in the military’s crackdown on dissent.

“Asean’s lowest common denominator approach to bringing different governments together may prove too cumbersome to address the complex and evolving circumstances on the ground in Myanmar,” Chong said. “All these limit what the organisation … can do.”

04:44

Myanmar junta’s execution of democracy activists triggers local and international outcry

Myanmar junta’s execution of democracy activists triggers local and international outcry

While Loh was not optimistic that Asean would be able to bring Myanmar’s military back to the fold, he said the regional bloc must not be seen as being passive.

“The outcomes could be suboptimal but it must be seen to be proactive. It’s probably one of the most pressing challenges Asean has faced in recent times,” he said. “It’s going to be a very tricky problem.”

Apart from the Myanmar crisis, Southeast Asian leaders were also expected to air concerns over the deepening rivalry between the United States and China, particularly in terms of regional stability, as well as supply chains, technology and trade, Chong said.

Another topic of discussion was the region’s territorial disputes with Beijing in the South China Sea.

China claims the entire disputed waterway – through which 60 per cent of maritime trade flows – based on “historic rights”. Four Southeast Asian states, namely Malaysia, Vietnam, the Philippines and Brunei, also count themselves as claimants.

“Other than security, economic stability and growth may feature as well given that slower growth and inflation are concerns to all parties at the summit,” Chong said, adding that there was too a possibility of environmental issues being discussed.

Sharon Seah, a senior fellow at the ISEAS-Yusof Ishak Institute think tank in Singapore, said Asean was well aware that this year’s summit was “not business as usual”, held against the backdrop of intensifying geopolitical competition.

“Asean’s agenda is always full,” she said.

Some critics have earlier suggested that the Asean summit could be overshadowed by the string of global forums slated to take place in the same week.

But Seah said the summit could instead be a chance for the regional organisation to demonstrate its convening power and to provide a conducive environment for constructive dialogue.

She pointed out that Biden had confirmed his attendance for the East Asia Summit, a broader forum held between Asean states and its dialogue partners such as China, Japan and Australia.

This meant there would be “ample opportunities” for participants from Washington and Beijing to “meet and dialogue” amid fast-souring ties between the two world powers.

“It is very important not to miss these three chances to bring about a defusion of tensions,” she said, referring to the trio of summits.

If planned sufficiently, the three summits could supplement each other and facilitate extended conversations over the many complex issues the region and the world are facing, Chong added.

“The risk is that the summits do not go well and reinforce impasse or awkwardness. That could create longer-term impediments to working together or even negotiations,” he said.