"So many young lives lost."

Life changed in Israel on October 7 last year. The unexpected and overwhelming assault by at least 1,500 Hamas fighters, pouring into Israel by land, sea and even paragliders, killed about 1,200 people, Israeli authorities said. More than 250 people were taken hostage and moved to Hamas' Gaza stronghold. CNN's Nic Robertson visits the site of the assault on the Nova Music Festival six months later, where the lives lost there are now being commemorated.