Dua Lipa, Michael Stipe and Cate Blanchett have signed an open letter, urging President Joe Biden to call for a ceasefire in Gaza.The letter calls for “an end to the bombing of Gaza and the safe release of hostages,” as well as a safe route to be established into Palestine to deliver humanitarian aid. So far, it has been signed by dozens of high-profile names from across the entertainment world.Many of those supporting the ceasefire are musicians, such as pop star Lipa, R.E.M’s Michael Stipe, Killer Mike and Caroline Polachek.