The Israeli military said a well-known local commander was among five militants killed after having “hidden inside a mosque” on Thursday, as it pressed ahead with the biggest operation in the occupied West Bank in more than 20 years.

Israeli troops launched the sweeping raids early Wednesday, raising international alarm as the U.S. ally wages an ongoing assault on the Gaza Strip and engages in a standoff with Iran that has fueled fears of a widening regional conflict.

The 5 deaths Israeli…