Nationalist rivalries are on show at border crossing where soldiers in elaborate uniforms perform flag ceremonies each night

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t a remote, monsoon-soaked border checkpoint, Indian soldiers will mark Independence Day by raising the country’s tricolour on a mast that towers above a Pakistani flag flying just across the frontier – part of an ongoing vertical duel in South Asia’s fraught politics.

Call it flag warfare: a contest not of weapons but of height, waged by two nuclear-armed neighbours that only three months ago fought a four-day battle which threatened to escalate into full-scale war.

This year’s flagpole frontline is Sadqi, a quiet patchwork of wheat fields in northern Punjab state’s Fazilka district. India’s Tiranga, or tricolour, will fly from a new 200-foot (61-metre) galvanised-iron mast. Across the barbed-wire frontier at Sulemanki, Pakistan’s green-and-white Parcham-e-Sitāra-o-Hilāl flutters from a 165-foot (50-metre) pole.