You inadvertently left a colon (:) out of the website address you have in there so your link is not working.

I cannot edit your post so here is the corrected link:

https://www.rt.com/news/340146-arihant-nuclear-submarine-trial/

India’s first submarine capable of firing nuclear ballistic missiles, the INS Arihant, is undergoing sea acceptance trials and will be commissioned after their completion, the Navy has announced.

"INS Arihant is now undergoing sea acceptance trails as it had already passed several deep sea diving drills. The submarine will be commissioned after completing all the sea trials," said H.C.S. Bisht, Vice Admiral of the Indian Navy.

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