Israel Air Strike Kills Hamas Leader in Gaza

At the Washington Post, "Hamas leader in Gaza killed by Israeli strike."

At at The Times of Israel, "IDF assassinates Hamas military leader Ahmed Jabari, readies for ground operation in Gaza":
Army bombs multiple terror targets in the Gaza Strip, killing up to six, as Operation Pillar of Defense commences against Hamas and Islamic Jihad targets; Hamas’s armed wing warns assassination of top activist has ‘opened the gates of hell’.