• Thai PM Paetongtarn faces mounting pressure to resign after a coalition partner's exit.
• Leaked phone call with former Cambodian leader complicates her leadership.
• Mass protests scheduled as political tensions rise ahead of parliamentary sessions.

Thailand's Prime Minister Paetongtarn Shinawatra is grappling with heightened calls for her resignation after a critical coalition partner, the Bhumjaithai Party, withdrew support over a leaked phone call where she appeared to disparage a senior Thai military commander and show deference to Cambodia's former leader, Hun Sen. This leaves her government at a precarious juncture with a diminished parliamentary majority; currently, Paetongtarn's coalition holds 255 seats in the 495-member House and cannot afford further defections, according to The Jakarta Post and Channel News Asia.

As political unrest mounts, the United Thai Nation Party, another coalition partner, is poised to decide whether to continue supporting Paetongtarn or demand her resignation, following significant public criticism and anticipated street protests set to begin on June 28, stacking pressure against her leadership, noted sources from South China Morning Post and Reuters.

During this turmoil, Paetongtarn reaffirmed her commitment to performing her duties amid the ongoing crisis, with party officials stating that she would not resign or dissolve parliament, asserting this stance in response to the growing dissent and protests forecasted to escalate due to her government's handling of critical issues, as reported by Bangkok Post and AA.

Political analysts warn that the potential for a parliamentary dissolution looms unless Paetongtarn can persuade remaining coalition partners to stay in line. External pressures from the opposition and potential court challenges could further destabilize her administration, threatening the flimsy coalition formed during her ascension to power last year, indicated by Channel News Asia and Channel News Asia.

Moreover, lingering resentments toward her family, particularly the legacy of her father Thaksin Shinawatra, contribute to the complex political landscape, with analysts noting to South China Morning Post that prior political divides are resurfacing and may see former allies become adversaries as the prospect of instability appears more imminent.