Tensions between Israel and the Hamas militant group grew into a full-out war after the October 7, 2023, terrorist attacks where around 1,200 people were killed and 251 people were taken hostage. The attacks led to a war that has lasted one full year. 101 hostages reportedly remain in Gaza and more than 45,000 Palestinians have been killed by Israel’s military operations there. CBS News’ Lana Zak breaks down the evolution of the Israel-Hamas war over the past year.