US President Joe Biden’s top adviser on the Middle East said that the release of hostages held by Hamas would lead to a surge in the delivery of humanitarian aid and a significant pause in fighting in Gaza, Reuters reports.

“The hostages are released, you will see a significant, significant change,” Brett McGurk said at the IISS Manama Dialogue security summit in Bahrain.

Bahrain’s crown prince, speaking at the summit on Friday, called on Hamas to release Israeli women and children held hostage and for Israel in exchange to release from its prisons Palestinian women and children who he said were non-combatants.