President Joe Biden is in Israel on an urgent mission to keep the Israel-Hamas war from spiraling into a broader regional conflict and to encourage the delivery of humanitarian aid to the Palestinians. The visit on Wednesday comes after hundreds of people were reported killed in an explosion at a Gaza Strip hospital a day earlier. The Hamas militant group blamed the blast on an Israeli airstrike, while the Israeli military blamed a rocket misfired by other Palestinian militants. The war that began Oct. 7 has become the deadliest of five Gaza wars for both sides.