on the ground. israel expands its ground operations in gaza. we re going to fight in the air, ground sea. what does the escalation mean for the region s future? and for the hostages trapped there by hamas? national security adviser jake sullivan joins me live next and then, intelligence committee republican senator james lankford. plus blackout. as israel s barrage picked up gaza went dark. palestinian civilians must be protected. what is the latest inside gaza and new beginnings? finally, the u.s. house elects a speaker. one more sign of republicans embrace of donald trump. another? i have decided to suspend my campaign for president. gop candidate chris christie on what it all means coming up. well, i m jake tapper in tel aviv where israeli bombard ams of gaza lit up the sky overnight. cnn teams are hearing constant explosions and machine gun fire with drones, helicopters and israeli fighter jets circling the skies, israel says the next phase of its w