President Biden is in Israel to show more support for its relentless assault on the Gaza Strip, which has reduced much of the territory to rubble, killed at least 3,300 Palestinians and displaced more than a million people. Israel also continues to maintain a complete siege, refusing to let in food, water, fuel, medicines and other necessities. Meanwhile, international outrage is growing over a massive explosion at the Al-Ahli Baptist Hospital that killed hundreds of people on Tuesday. Palestinian authorities say it was an Israeli airstrike, while Israel has claimed a failed rocket launch by Gaza militants caused the blast. "Whoever was responsible, the result will be enormous, enormous anger at the United States for its support of Israel, as well as a further increase in this enormous death toll inside Gaza," says Palestinian American historian Rashid Khalidi, the Edward Said professor of modern Arab studies at Columbia University.