The Wall Street Journal reports that Israeli airstrike in which Hamas leader Mohammed Sinwar was eliminated targeted a high-level Hamas meeting.

A costly mistake of breaking security protocol to hold a security meeting at a Khan Younis tunnel in Gaza proved costly for Hamas's new chief, Mohammed Sinwar. Sinwar, brother of slain Hamas chief Yahya Sinwar, died after Israel struck the tunnel, according to a report.

Sinwar is believed to have been a hardline figure in Hamas who refused any compromise in negotiations with Israel that didn't include an end to the war.