By Abu Bakr Bashir , Daniel Estrin A Palestinian militant wearing the uniform of the al-Qassam Brigades, the military wing of Hamas, Oct. 15, 2025. Ahmad Salem/Bloomberg via Getty Images hide caption SHEFFIELD, U.K., and JERUSALEM — Mediators have given Hamas a formal proposal to lay down its weapons, a senior U.S. official told NPR. The proposal calls for Hamas and all other militant groups in Gaza to hand over all weapons, making an emerging governing authority responsible for all arms. The demilitarization proposal was handed over to Hamas last week in Cairo, an additional official in the region said. A third person briefed on the proposal called it a comprehensive framework to ensure the "complete handover" and "full decommissioning" of arms belonging to Hamas and all other armed groups in Gaza, and that if Hamas accepts the proposal, it would ensure large-scale reconstruction of Gaza. The person said Hamas has been asked to respond to the proposal in about a weeks time, after the Muslim Eid holiday.…