As fighting between Israel and Hamas militants occurred for a week, Sen. Bernie Sanders on Sunday called for a “hard look” into the billions of dollars in annual military aid that the United States provides to Israel. “The devastation in Gaza is unconscionable. We must urge an immediate ceasefire. The killing of Palestinians and Israelis must end,” Sanders posted in a tweet Sunday. “We must also take a hard look at nearly $4 billion a year in military aid to Israel. It is illegal to support human rights violations.”