The East Asia Summit capped a series of ASEAN meetings in Cambodia's capital, Phnom Penh, on Sunday, at which leaders discussed situations in North Korea and Ukraine.

Japanese Prime Minister Kishida Fumio, US President Joe Biden, Chinese Premier Li Keqiang and Russian Foreign Minister Sergey Lavrov were among the attendees.

Cambodian Prime Minister Hun Sen opened the meeting by saying social development and people's lives have been made difficult by tensions brought about by the recent international situation.

He said he believed productive discussions were possible despite differences in the participants' positions.

Details of the closed meeting were not disclosed. Participants are believed to have discussed North Korea's repeated ballistic missile launches, the situation in Ukraine where Russia's military aggression continues, and China's maritime activities in the South China Sea.

The White House says Biden raised concerns regarding the threat posed by North Korea, and criticized Russia's invasion of Ukraine in the strongest terms.

A draft of the chairperson's statement obtained by NHK says it strongly condemns North Korea and urges it to observe the UN Security Council's resolutions. It also calls for an immediate ceasefire in Ukraine.

As Russia attended the summit, the focus is on how the chair country Cambodia will finalize the statement.