Israeli Prime Minister Benjamin Netanyahu's office denied on Wednesday that Hamas had agreed to the Gaza ceasefire proposal from Qatari mediators, after an Israeli official said the Palestinian militant group had given its approval.

U.S., Qatari and Egyptian mediators shuttled between the Israeli and Hamas delegations in Doha on Tuesday, where officials said a deal to halt the war is near.

Hamas has accepted a draft agreement for a ceasefire in the Gaza Strip and the release of dozens of hostages, two officials involved in the talks said Tuesday. Mediator Qatar said the negotiations

After more than a year of talks, both sides say they are close to a deal that could halt Israel’s bombardment of Gaza and return Israeli hostages home.

The question is if the ceasefire will survive beyond its first phase. Here is a look at the plan and potential pitfalls.