After less than a year in office, Thailand's Prime Minister Paetongtarn Shinawatra has her back to the wall — and little room left to maneuver.

For months, the 38-year-old — the second woman and the youngest Thai to hold the position — has grappled with a faltering economy that has stalled her Pheu Thai party's flagship economic scheme while coping with an unwieldy ruling coalition.

But the leaked audio of a phone call with Cambodia's former leader Hun Sen, after weeks of bickering between the two Southeast Asian neighbors over a disputed border, could be the final blow to her 10-month term.