Israel pounded downtown Gaza City with relentless bombardments Tuesday after it vowed a retaliation that would “reverberate for generations” against the Hamas militant group for its surprise weekend attack. The Israeli military said it struck hundreds of targets in Gaza City's Rimal neighborhood, a densely populated, upscale district that is home to ministries of the Hamas-run government, as well as universities, media organizations and the offices of aid organizations. After hours of nonstop strikes, some residents left their homes at daybreak to find some buildings torn in half by strikes, while others were reduced to mounds of concrete and rebar. The devastation in Rimal signaled what could be a new Israeli tactic: warning civilians to leave certain areas and then hitting those areas with airstrikes of unprecedented intensity. If these types of bombardments continue, Gaza’s civilians will have fewer places to shelter as more neighborhoods become uninhabitable.