Thailand’s Prime Minister Paetongtarn Shinawatra has visited the border with Cambodia as she faced resignation calls following a leaked phone call between her and Cambodia’s former leader discussing recent border tensions.

Thailand's Ministry of Foreign Affairs announced Thursday that it will hand a letter of protest to Cambodia's government after a call between the two countries was allegedly leaked by a high-profile Cambodian official.

The leaked phone recording on Wednesday sparked public anger and pushed the coalition government to the brink of collapse as the second-largest party in her government quit the coalition. A part of the 17-minute private conversation between Ms Paetongtarn and Hun Sen,