Myanmar’s junta chief Min Aung Hlaing. Officials from Southeast Asian countries are considering engaging with Myanmar's military-controlled government after years of diplomatic isolation. | AFP / Getty images / via BLOOMBERG

Sentiment is warming among some Southeast Asian nations toward easing Myanmar’s isolation five years after a coup, with diplomats signaling a possible opening to bring the crisis-torn nation back into the fold.

A top Cambodian official, speaking in an interview on the sidelines of the Association of Southeast Asian Nations (ASEAN), cited the release of more than 4,000 prisoners in Myanmar and the transfer of former leader Aung San Suu Kyi to house arrest as grounds to deepen engagement.…