<s>[INST] What is the main purpose of Article 249? [/INST] The main purpose of Article 249 is to provide Parliament with the power to legislate on a matter in the State List in the national interest, if supported by a resolution passed in the Council of States (Rajya Sabha) with at least two-thirds majority. This authority extends to the whole or any part of India and can remain in force for up to one year, subject to renewal through further resolutions. </s>