CAIRO (Reuters) -A new round of Gaza ceasefire negotiations between Hamas and Israel is underway in Qatar's Doha, Hamas official Taher al-Nono told Reuters on Saturday. Nono said Hamas was "keen to exert all the effort needed" to help mediators make the negotiations a success, adding there was "no certain offer on the table". The negotiations come despite Israel preparing to expand operations in the Gaza Strip as they seek "operational control" in some areas of the war-torn enclave.