Modern diplomacy has evolved beyond the exclusive control of politicians and career diplomats. People-to-people relations now play a significant role in shaping the ties between sovereign nations. This influence is increasingly driven by interactions on social media platforms rather than face-to-face contact. In Thailand, this phenomenon is particularly evident in the country's relations with Cambodia and China. The digital space often fosters toxic environments that can negatively impact official diplomatic trajectories. Consequently, online sentiment can create volatility in foreign affairs. Understanding this shift is crucial for navigating contemporary international relations.