And the rampant spread of misinformation online about the israelhamas war. We are going to separate fact from fiction with two experts as the 11th hour gets underway on this tuesday night. Good evening once again, i am stephanie ruhle, live from msnbc headquarters in new york city. President biden is on his way to israel as we speak, as a crisis in the middle east appears to reach a tipping point. Bidens mission, to show support for israel in its and to press for aid to gaza, now in the midst of a humanitarian crisis. But just hours ahead of biden leaving d. C. , a powerful explosion rocked a hospital in gaza, Killing Hundreds of people. Officials in gaza and in israel had blamed one another for the blast. That has inflamed already high tensions across the region. Nbcs Richard Engel has more. Palestinians call it a massacre and say hospital in gaza city, a direct hit with thousands of pellets to palestinians airstrikes on gaza Gazas Health Ministry which is run by hamas says hundreds a