As Israel continues to block lifesaving humanitarian aid from entering northern Gaza, humanitarian organizations are describing its siege as apocalyptic" and warning of mass Palestinian starvation and death. The situation is absolutely desperate," says Rachael Cummings of the aid group Save the Children International. Cummings joins us from Deir al-Balah in central Gaza, where aid organizations have been halted from entering the north. She responds to news of Israel's bombing of a polio vaccination center in an area that had been marked for an official humanitarian pause, and the Knesset's vote to ban the U.N. relief agency UNRWA.