Brown University President Christina Paxson announced Monday that she will step down at the end of the 2026-27 academic year, after a tumultuous period that has seen her navigate both a hostile administration in Washington and a mass shooting on her campus.Paxson is the longest-serving president in the Ivy League, which represents eight of the top U.S. universities. She has helmed her university since 2012, the longest tenure of any active Ivy League president.Paxson inked a controversial deal with the Trump administration to preserve Brown’s research funding. Under the deal, Brown committed to investing $50 million over the decade to...