If India has this technology, India would be the only country in the world that can intercept ICBM as US with mid course missile defense do not has this capability. Maybe the US can import some from india and steal this technology
On a 2nd thought, I do not believe India is capable of doing it. Can you imagine what would hapepn if India can produce such an advance weapon that even US is not capable of producing after 20+ years of effort? India would make it a 1 week national holiday and this info would be broadcast over the news over and over again. Also, this info would be brought out by the Indian folks here to demonstrate Indian's technological advance. The fact that you never got 1 week off, not to mentioned that no one ever heard that India can intercept ICBMs, tell the whole story.
Finally, you are the first and the last Indian that ever mentioned that India can intercept ICBMs such as ss-18, Monutemen III and Trident D5