Officials at Gaza’s largest hospital say 15 more Palestinian bodies have been returned from Israel. This follows last month’s ceasefire agreement.

Israel's military gave CBS News a rare look deep inside Gaza, where many questions still hang over the ruins of war and the future of 2 million Palestinians.

The soldiers manning the outpost are overseeing a delicate aspect of the now three-week-old ceasefire: the “yellow line,” a boundary of yellow blocks and flags laid out by the Israel Defense Forces that now mark the border between them and Hamas-controlled Gaza.

For each Israeli hostage returned, Israel has been releasing the remains of 15 Palestinians. Fewer than half have been identified. Forensic work is complicated by a lack of DNA testing kits in Gaza. The Health Ministry there posts photos of the remains online, in the hope that families will recognize them.

Israeli Prime Minister Benjamin Netanyahu’s office said he “is not allowing safe passage for 200 Hamas terrorists” who are currently trapped beneath an Israeli-controlled part of

DEIR AL-BALAH, Gaza Strip (AP) — The Israeli army launched a barrage of attacks in Gaza on Tuesday as tensions with Hamas grew two weeks into a fragile ceasefire, and the group responded by saying it would delay handing over the body of a hostage. At least seven Palestinians were killed, health officials said.

Israel and Hamas took steps toward ending the two-year war that has devastated the Gaza Strip, but hard work lies ahead.