Some academics in Southeast Asia and the Pacific are hoping that Japan's new prime minister, Yoshihide Suga, will play a leadership role in Indo-Pacific affairs — just as his predecessor Shinzo Abe did — especially at a time when the United States and China are engaged in a "new cold war."

They suggest that Suga's government maintain the economic and maritime cooperation central to regional affairs, rather than primarily focusing on security, so as not to exacerbate U.S.-China tensions heightened over situations in the South China Sea, Hong Kong and most recently in Taiwan.

"The region has benefited from a Japan under Mr. Abe that was more proactive and consistent and a trusted partner. Mr. Suga represents continuity and this is reassuring," said Simon Tay, chairman of the Singapore Institute of International Affairs.