A U.S. judge on Friday denied Mahmoud Khalil’s request to be released from detention, after federal prosecutors changed their rationale for holding the Columbia graduate student as part of its crackdown on pro-Palestinian activists.

Iran’s Supreme Leader Ayatollah Ali Khamenei on Saturday said that Iran’s armed forces were ready to face Israel.

Parents and governments are left reeling and at a loss how to protect schools from random, deadly violence. 

​Parents and governments are left reeling and at a loss how to protect schools from random, deadly violence.