If the Israel-Hamas war stopped today, it would still take until 2040 to rebuild all the homes that have been destroyed in nearly seven months of Israel’s bombardment and ground offensives in the territory, according to United Nations estimates released Thursday.

The United States has pressured Israel to increase aid deliveries during the war, and on Wednesday, Israel reopened a border crossing with hard-hit northern Gaza Strip for the first time since it was damaged at the start of the war.

Meanwhile, on his seventh visit since the latest war between Israel and Hamas broke out in October, U.S. Secretary of State Antony Blinken pressed for a cease-fire deal. The proposed truce would free hostages held by Hamas in exchange for a halt to the fighting and the delivery of much needed food, medicine and water into Gaza. Palestinian prisoners are also expected to be released as part of the deal.