A United Nations special envoy has urged Southeast Asian countries to support international efforts to engage all sides of the crisis in army-ruled Myanmar, days after a top regional leader travelled there to meet its junta chief.

Noeleen Heyzer, the secretary-general's special envoy on Myanmar, held virtual talks with Cambodian Prime Minister Hun Sen, the UN said in a statement today.

The talks with Hun Sen, the new chairperson of the Association of Southeast Asian Nations (Asean), sought a...