GETTING THIS UNTHINKABLE NEWS. MATT, THANK YOU. >>> NBC'S GABE GUTIERREZ IS AT THE WHITE HOUSE WITH REACTION NOW FROM PRESIDENT BIDEN. GABE, GOOD MORNING. >> Reporter: WILLIE, GOOD MORNING. PRESIDENT BIDEN OVERNIGHT SAYING HE IS DEVASTATED AND OUTRAGED. THIS COMES, OF COURSE, AFTER MONTHS OF FRUSTRATING CEASEFIRE NEGOTIATIONS AND THE PRESIDENT INSISTS THEY'RE ON THE VERGE OF HAVING AN AGREEMENT. STILL, IN A WRITTEN STATEMENT HE SAYS THE NEWS OF THE DEATHS IS AS TRAGIC AS IT IS REPREHENSIBLE. MAKE NO MISTAKE, HAMAS LEADERS WILL PAY FOR THESE CRIMES, AND WE WILL KEEP WORKING AROUND THE CLOCK FOR A DEAL TO SECURE THE RELEASE OF THE REMAINING HOSTAGES. THE PRESIDENT ALSO SAYS HE'S GOTTEN TO KNOW HERSH'S PARENTS, JOHN AND RACHEL. THE PRESIDENT SAID HE ADMIRES THEM AND GRIEVES WITH THEM MORE DEEPLY THAN WORDS CAN EXPRESS. VICE PRESIDENT HARRIS RELEASING HER OWN WRITTEN STATEMENT OVERNIGHT WHERE SHE SAYS, MAY HERSH'S MEMORY BE A BLESSING, ADDING HAMAS IS AN EVIL TERRORIST ORGANIZATION. WITH THESE MURDERS, HAMAS HAS EVEN MORE AMERICAN BLOOD ON ITS HANDS. I STRONGLY CONDEMNED HAMAS' CONTINUED BRUTALITY AND SO MUST THE ENTIRE WORLD, THE VICE PRESIDENT SAYS