Prime Minister Lee Hsien Loong has called on Asean nations and their partners to write a new rule-book on trade to keep up with the rapidly evolving digital economy.
Addressing fellow leaders during the East Asia Summit, PM Lee said international trade has been a key driver of global growth and prosperity since the end of World War II.
"But the multilateral system must be updated to reflect current realities to continue to function properly and in a politically sustainable way," he said yesterday.
The summit is a forum for the 10 Asean members and key partners - Australia, China, India, Japan, New Zealand, South Korea, the United States and Russia - to discuss political, security and economic issues.
Yesterday's meeting, chaired by Thai Prime Minister Prayut Chan-o-cha, saw leaders exchange views on regional and international issues and adopt three documents on combatting illicit drugs and transnational crime, and on forging partnerships for sustainability.
PM Lee said one way to update multilateral trade agreements was to take into account the growing weight of emerging economies.
The other was to have new rules to "accommodate the digital revolution, which has transformed how economies and jobs are structured". He added that Singapore had supported efforts such as the World Trade Organisation (WTO) Joint Statement on E-Commerce initiative, which aims to establish rules for the digital economy. It has also supported efforts to update the WTO rule book with "like-minded partners", he said.
He also called for more initiatives to address infrastructure gaps in the region, noting that Asia will need to invest US$1.7 trillion (S$2.3 trillion) annually in infrastructure until 2030 to maintain its growth momentum.
"The public sector alone cannot finance this infrastructure gap," he said. "The establishment of the Initial Rolling Pipeline of Potential Asean Infrastructure Projects under the Masterplan on Asean Connectivity 2025 will enhance the visibility of connectivity projects in the region, so that the private sector and multilateral financial institutions can play their part too."
He added that Singapore has set up the Infrastructure Asia Office "to partner stakeholders to develop, finance and implement bankable projects".
Turning to political cooperation, PM Lee noted that while steady progress has been made on negotiating a code of conduct (COC) for the South China Sea, all parties had to "exercise self-restraint and avoid mishaps and miscalculations that could result in many unintended consequences". He expressed hope that ongoing issues like the situation in Myanmar's Rakhine state, the Korean peninsula and Hong Kong will be resolved with support from Asean and its partners.
PM Lee also called for the deepening of cooperation between Asean and its Plus Three partners - China, Japan and South Korea - to strengthen the region's ability to respond to any recession or financial crisis.
Speaking at the Asean Plus Three Summit, he said initiatives the group could increase support for include the Chiang Mai Initiative Multilateralisation - a currency swap arrangement - and the Asean Plus Three Macroeconomic Research Office, to help ensure the region's long-term economic resilience.
The group also adopted a leaders' Statement on Connecting the Connectivities Initiative, where members pledged to work together on improving transport, trade and people-to-people links, as well as digital connectivity.