A chilling mystery surrounds the killing of MIT fusion scientist Nuno Loureiro, who was shot dead inside his Boston-area home, triggering global speculation over possible geopolitical motives. Israeli and U.S. media reports, combined with a now-deleted post by billionaire Bill Ackman, have fueled claims of a potential Iranian link—an allegation authorities have not confirmed. With the shooter still at large and no official motive disclosed, questions are mounting over whether elite U.S. universities and pro-Israel academics are being targeted amid rising global tensions.