Article 365 of CoI : Article 365: Effect of failure to comply with, or to give effect to, directions given by the Union.

Explanation using Example

Example 1:

The Union Government directs the State of Maharashtra to implement a specific national education policy aimed at standardizing the curriculum across the country. Despite repeated reminders, the State Government fails to implement the policy. The President, upon reviewing the situation, determines that the State Government's non-compliance is a violation of the Constitution. Consequently, the President declares that the State Government is unable to function according to the constitutional provisions, leading to the imposition of President's Rule in Maharashtra.

Example 2:

The Union Government issues a directive to the State of West Bengal to ensure the protection of a particular minority community following reports of widespread violence. The State Government, however, does not take adequate measures to protect the community, resulting in continued violence and unrest. The President, assessing the situation, concludes that the State Government's failure to act is a breach of constitutional duty. As a result, the President declares that the State Government cannot be carried on in accordance with the Constitution, and President's Rule is imposed in West Bengal.