'Nowhere to go': Ordinary Palestinians live in fear as Israel retaliates against Hamas

When the Palestinian militant group Hamas launched an attack on Israel Saturday morning, Palestinians living in the besieged strip had mixed feelings.

Some celebrated, taking pride in what they perceived as a victory against Israel. Others, however, were afraid, dreading a deadly retaliation.

The militant group's unprecedented incursion prompted vows of retribution from Israeli Prime Minister Benjamin Netanyahu, who declared on Saturday that his country was at war, pledging a "mighty vengeance for this black day."

Israel's Minister of Strategic Affairs Ron Dermer told CNN's Dana Bash on Sunday that more than 600 people have been killed in Israel, and that the death toll is likely to rise.

Israel Defense Forces (IDF) spokesperson Rear Adm. Daniel Hagari said Sunday that Israel destroyed around 800 targets in Gaza, including what he described as launching pads used by Hamas.

At least 413 Palestinians have been killed, including 78 children, the Palestinian Ministry of Health in Gaza said.

No strangers to war with Israel, many Gazans are sheltering in their homes, with the vast majority lacking access to bunkers. The territory is one of the most densely populated places on earth, where some 2 million people live in an area of 140 square miles.