Assam Chief Minister Himanta Biswa Sarma warned on December 23, 2025, in Guwahati that a further 10% rise in the state’s Bangladeshi-origin population—already at 40%, or about 1.6 crore people—could render Assam “automatically part of Bangladesh,” exacerbating demographic invasion risks projected to equalize Hindu-Muslim numbers by the 2027 census. Sarma’s remarks responded to National Citizen Party leader Hasnat Abdullah’s December 15 threat at Dhaka’s Shaheed Minar to shelter Northeast separatists and sever the “Seven Sisters” from India via the vulnerable Siliguri Corridor if tensions escalate. From an Indian security lens, these developments heighten anxieties over illegal migration undermining indigenous Assamese identity, border porosity, and mainland-Northeast connectivity, demanding vigilant border fortification and demographic safeguards.