Does India need to control the Indian Ocean in order to defend itself? What about Mexico, should it control the Gulf of Mexico? Ireland, the Irish Sea? Etc. A

Does India need to control the Indian Ocean in order to defend itself? What about Mexico, should it control the Gulf of Mexico? Ireland, the Irish Sea? Etc. And, by the way, as of 2024, you don't really need to control the entire sea (or even half of it) to prevent the enemy from landing on your shores. Any military worth its cost has a large assortment of missiles for that purpose. Case in point: Ukraine has unambigously denied the Russians (the Russians!) control of the Black Sea while literally having no navy to speak of. By shooting at them from land. That is how it goes. Taiwan also doesn't rely on its control of the seas to defend itself. Even the Israeli Navy is comparatively weak. Etc.