Logically therefore, the Executive cannot employ an amendment within the domestic laws of the State to imply an amendment within the treaty. Moreover, a treaty of this nature is a carefully negotiated economic bargain between two States. No one party to the treaty can ascribe to itself the power to unilaterally change the terms of the treaty and annul this economic bargain. It may decide to not follow the treaty, it may chose to renege from its obligations under it and exit it, but it cannot amend the treaty, especially by employing domestic law. The principle is reciprocal. Every treaty entered into be the Indian State, unless self-executory, becomes operative within the State once Parliament passes a law to such effect, which governs the relationship between the treaty terms and the other laws of the State. It then becomes part of the general conspectus of domestic law. Now, if an amendment were to be effected to the terms of such treaty, unless the existing operationalizing domestic law states that such amendments are to become automatically applicable, Parliament will have to by either a separate law, or through an amendment to the original law, make the amendment effective. Similarly, amendments to domestic law cannot be read into treaty provisions without amending the treaty itself. 53. Finally, States are expected to fulfill their obligations under a treaty in good faith. This includes the obligation to not defeat the purpose and object of the treaty. These obligations are rooted in customary international law, codified by the VCLT, especially Article 26 (binding nature of treaties and the obligation to perform them in good faith); Article 27 (Internal law and observance of treaties, i.e provisions of internal or municipal law of a nation cannot be used to justify omission to perform a treaty); General rule of interpretation under Article 31 (1) ( i.e that it shall be interpreted in good
