> blockade potential
Not really.
Most chips that India's MIC uses that aren't domestically fabricated comes from Tower Semiconductors' fabs in Israel, and the India's Eastern Naval Command has near complete control over the Eastern half of the Indian Ocean as there are massive naval and listening posts in Madagascar, Tanzania, Djibouti, Oman, UAE, Gujarat, Maharashtra, Kerala, etc
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Also, Guided Munitions have been manufactured in India since the 2000s.
Israeli ballistic missile manufacturers like Rafael, IAI, Elbit, etc did a 100% IP ToT to Indian PSUs and private sector defense contractors when the Chinese MIC was sanctioned for Tiananmen in the 90s.
There was a whole corruption scandal over this in India that lead to the collapse of the Vajpayee Administration, and had some blowback in Israeli politics in the 2000s as well.