israel says it s taken out a senior hamas leader. but the strike devastating a gaza refugee camp. one doctor says hundreds have been killed or injured. plus, escaping gaza in just hours. a crucial border crossing is set to open for some of those in danger, as we re learning there are some 400 american citizens stuck in the gaza strip. i ll talk to a member of the international committee of the red cross in gaza. and the u.s. putting iran on notice right now, warning, if the attacks on american troops don t stop, the u.s. will respond. let s go outfront. good evening. welcome to a special edition of outfront. i m wolf blitzer in for erin burnett. and, tonight, live from here in tel aviv, there s breaking news. israel claiming to have hit 300 targets in gaza over the past 24 hours alone. one of those targets, a refugee camp just north of gaza city where israel says a very senior hamas commander was located. explosions rocked the refugee camp just hours ago, flattening