Columbia University has agreed to adopt a controversial definition of antisemitism as it pursues an agreement with the Trump aimed at restoring $400m in federal government grants frozen over its alleged failure to protect Jewish students. In a letter to students and staff, the university’s acting president, Claire Shipman, said it would incorporate the International Holocaust Remembrance Alliance’s definition of antisemitism into its anti-discrimination policies as part of a broad overhaul. It is the latest in a string of concessions Columbia has made following criticisms – mainly from pro-Israel groups and Republican members of Congress – that university authorities had...