On Wednesday, Columbia announced a global effort to help people like Sahtout — refugees and students displaced by wars and natural disasters. The Columbia University Scholarship for Displaced Students, underwritten with a commitment of up to $6 million a year, is the first of its kind in the world, university officials said. As many as 30 students a year who are admitted to any of the university’s undergraduate or graduate programs will have all of their education and living expenses covered.