The Prime Minister congratulated India's scientists and engineers after the indigenously developed Prototype Fast Breeder Reactor (PFBR) at Kalpakkam attained criticality. He described the event as a defining step forward in the country's civil nuclear journey and said it marked significant progress in the second stage of the nuclear programme. The Prime Minister noted that the reactor represents the culmination of sustained research and engineering effort and reflects deep domestic capability. He also acknowledged the collective commitment of the teams involved in reaching the milestone. The PFBR, designed and built in India, has the capability to generate more fuel than it consumes, which the Prime Minister said demonstrates strengthened technical competence and robust engineering enterprise. Such breeder reactors are intended to expand the fissile material available to the nuclear sector and thereby enhance the sustainability of the national fuel cycle. Observers consider the technology to be central to plans for long-term deployment of thorium-based resources. The Prime Minister indicated that this achievement paves the way for effectively harnessing India's vast thorium reserves in the third stage of the nuclear programme and underlined its strategic significance for energy security. He conveyed that the milestone will inform further stages of development and contribute to institutional learning across research and engineering establishments. The announcement was presented as a proud moment for the nation and an affirmation of domestic scientific talent. The government signalled continued support for scientific endeavour that advances the national nuclear capability and for the integration of this achievement within broader energy planning. Attention is expected to shift to subsequent testing, validation and steps required to operationalise the reactor safely and efficiently. Authorities reiterated their commitment to maintain stringent safety and regulatory standards as the programme progresses.