Hospitals and clinics destroyed. Millions of tons of debris contaminated with toxic substances, unexploded ordnance and human remains. Tens of thousands of people with injuries that will require a lifetime of care.

Hundreds of thousands of displaced Palestinians returning to their homes in northern Gaza have passed through checkpoints in a central zone of the enclave where scanners check for concealed weapons being taken in cars and vehicles.

JERUSALEM (Reuters) - Israeli Finance Minister Bezalel Smotrich has withdrawn a threat to quit the government if Israel does not return to fighting in Gaza, several Israeli news sites reported on Monday.

The ceasefire agreement between Israel, Hamas and Hezbollah is in new jeopardy Sunday as various groups slow walk responsibilities under the deal.

Michael Levy, brother of hostage Or Levy, joins Andrea Mitchell to discuss the ceasefire agreement and the critical need for sustained international support. Levy expressed cautious optimism about the agreement,

The ceasefire between Hamas and Israel began Jan. 19 after Hamas supplied a list of the hostages slated for return to Israel.

Hamas released four Israeli hostages in Gaza early Saturday in exchange for 200 Palestinian prisoners to be released later in the day. It was the second release to occur as part of the ceasefire agreement that began last weekend. Israel followed with the release of 200 Palestinian prisoners.

The ceasefire in Gaza provides some respite, but without a durable solution to the conflict, the locus of violence will only shift. If Israel undermines the Palestinian Authority, Hamas will be left as the leader of the Palestinian movement.

After four female Israeli soldiers were released by Hamas over the weekend, six more hostages were to be released this week. Some of those expected to be freed in the first phase of the ceasefire with Israel are thought to be dead.

They returned under a ceasefire deal between Israel and Hamas, walking for hours to reach the bombed-out landscape.