The Republic guarantees the payment obligations of the Agency set forth in Section 13.4 (Change-in-Law), Schedule 4 (Government Works Funding Arrangements), Schedule 17 (Fares) and Schedule 23 (Termination Buy-Out and Transfer Provisions) of the Agreement (the "Guaranteed Payment Obligations") at all times as they fall due and until such Guaranteed Payment Obligations have been fully discharged in accordance with the Agreement.