on the ground. israel expands its ground operations in gaza. we re going to fight in the air, ground, and 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 which he republican senator, james langford. plus, blackout, as israel s barrage picked up, gaza went dark with communication services cut. palestinian civilians must be protected. now with communications partly extraordinary, 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. hello. i m jake tapper in tel aviv, where israeli bombardments of gaza lit up the sky overnight. cnn teams are hearing constant explosions and some machine gun fire with drones