Ronny Naftaniel, the former director of the Center for Information and Documentation on Israel (CIDI), has canceled his membership of the PvdA. This was prompted by a GroenLinks-PvdA statement on the presence of Israeli President Isaac Herzog at the opening of the National Holocaust Museum in Amsterdam. In the statement, MP Kati Piri described Herzog's presence as undesirable on behalf of GroenLinks-PvdA.