Cornell University canceled classes on Friday as officials acknowledged the “extraordinary stress” on students following the arrest of a junior accused of threatening to murder Jews on campus. Patrick Dai, 21, appeared in federal court on Wednesday charged with making threats to the university’s Jewish community in the wake of Israel’s retaliation in Gaza for last month’s attacks by Hamas. He will remain in custody at least until his next court appearance on 15 November. Meanwhile, officials at the private New York university canceled all classes and declared Friday a community day “in recognition of the extraordinary stress of the...