Complex sentence: On September 25, a day before the Israeli settlement freeze's expiration, Palestinian Authority President Mahmoud Abbas claimed in the United Nations General Assembly that Israeli settlements were a key issue, stating thaat "Israel must choose between peace and the continuation of settlements".
Split into simpler sentences: On September 25, a day before the Israeli settlement freeze's expiration, Palestinian Authority President Mahmoud Abbas stated in the United Nations General Assembly that Israeli settlements were a key issue. Stating that "Israel must choose between peace and the continuation of settlements".