israel is hitting what it says are hamas targets across gaza. it s unclear if palestinians are receiving warnings to leave certain areas. a stunning downfall. the president of the university of pennsylvania resigns amid public outrage over her testimony to congress about anti-semitism on campus. leaders of venezuela and guyana have agreed to meet because of a dispute over land. we begin this hour in gaza where israeli air strikes and ground operations are ongoing against what israel says are hamas targets across the strip. some of the fiercest battles are said to be in and around the southern city of khan yunis which the idf has described as a hamas stronghold. due to poor communications, it isn t clear if palestinians are able to receive warnings. two large explosions are building in central gaza early saturday setting off a scramble to pull victims from the wreckage. residents say at least 150 people were thought to be sheltering inside. the hamas-run health ministry