When SN enters into an SN NAESB Contract, the Seller or its related business will assign to SN the contractual confirmations of NAESB under this SN NAESB Contract upon termination of the transitional period, if any, subject to the provisions of Annex 13.4. Any transaction entered into as a result of this tender shall be documented as a transaction under an active NAESB agreement or an ISDA gas annex. Indeed, the NAESB contract is essentially the GISB contract, with slightly modest modifications. The agreement contains many of the same clauses and definitions 17 as the NAESB agreement and is intended to constitute a `basic contract` for several transactions resulting in the physical supply of natural gas. These SN NAESB contracts allow the Seller to transfer the NAESB Contract Confirmations for the corresponding NAESB Contracts and (b) provide that the Seller assumes no responsibility for matters that arise after the effective date of such NAESB Contractual Confirmations. The authorization extended to individual transactions under any number of NAESB contracts with referenced suppliers; however, provided that (a) the maximum expenses under a NAESB contract do not exceed US$65 million; and (b) the maximum duration of a transaction shall not exceed three years beginning on the date of delivery of the transaction. Termination of this Agreement pursuant to this Section 12.1 shall not affect the future effectiveness of the EEI Agreement, the NAESB Agreement, the ISDA Agreement and any transactions confirmed under the Master Clearing Agreement or the foregoing. IDT acknowledges and agrees that the credit risk of the parties to BP vis-à-vis IDT with respect to ongoing transactions concluded under the EEI Agreement, the NAESB Agreement or the ISDA Agreement is governed by this Agreement, the Master Clearing Agreement and the security documents relating to the management of market commitments.