New Delhi, Feb. 9 -- Is Tehran moving towards 'zero day'? Don't get alarmed. I am not suggesting a possible US attack, but an unprecedented water stress that has gripped the Iranian capital. It's facing various threats and suffering from an endless water crisis. Iranian president Masoud Pezeshkian, in a resigned tone, declared that relocating the country's capital was not a choice, but a compulsion.

Tehran didn't land in this situation suddenly. Warning signs had been building for years.

The city's water supply comes from snow on the Alborz mountain ranges but the centuries-old system is facing global warming threats. Snowfall has steadily reduced, leading to a decline in water supply while the size of the metropolis and its population ...