India’s nuclear leap: Why its fast breeder reactor success matters

The prototype fast breeder reactor (PBFR) at Kalpakkam in Tamil Nadu has reached criticality, marking a significant advancement for India's nuclear program. Once fully operational, India will become the second country after Russia to have a commercial fast breeder reactor. Indian Prime Minister Narendra Modi called it 'a proud moment for India' and 'a defining step' towards harnessing the country's vast thorium reserves.