More than 200 celebrities, including actors Benedict Cumberbatch and Josh O’Connor, called on Israel on Wednesday to release imprisoned Palestinian politician Marwan Barghouti, who is seen by supporters as a key unifying figure.The open letter calling for his release featured film A-listers Josh O’Connor, Benedict Cumberbatch and Javier Bardem, as well as musicians Fontaines D.C. and Sting.