Israel and Hamas are working to advance their ceasefire agreement in Gaza to the next phase, but it remains uncertain if they will be successful. The first phase of the ceasefire, which lasted 15 months, is set to expire on Saturday. The second phase would require Hamas to release all remaining hostages in exchange for more Palestinian prisoners, a lasting ceasefire, and a full Israeli withdrawal from the Gaza Strip. However, reaching the second phase will be challenging as it forces Israel to choose between its war goals. There are signs of strain, with Israel seeking an extension of the first phase to secure the freedom of more captives. It is unclear what the next steps will be if the parties do not reach the next phase of the ceasefire.