Intelligence sharing is necessary. China is helping but I think we need more and more real time data. Mining is possible. Where is Indian nuclear submarine? They will deploy this sub either against us or against China. Indian submarine presence is always suspicious. There is one thing that I know for sure and that is their clear intention to not allow us to cross our own EEZ and venture in deep ocean. They are probably mining and putting sensors in our water.They are smuggling arms and terrorists or testing our defenses, even worse laying sensors to detect ship / Submarine positions. With CPEC being attacked by Indian agents Pakistan should be on high alert 24X7.