Negotiators from Israel and Hamas are making a final push to seal a Gaza ceasefire in Doha, with all sides suggesting an agreement is almost done. There were reports of a breakthrough on Wednesday, with unnamed Israeli officials cited as saying that Hamas had agreed to the latest draft presented by Qatari, US and Egyptian mediators.

The first phase, spanning a 42-day ceasefire, would see the exchange of 33 Israeli hostages in Gaza for Palestinians held in Israeli prisons, U.S. officials said.

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