New Delhi, Nov 5 : Dhanteras got more special, Prime Minister Narendra Modi said while felicitating the crew of Strategic Strike Nuclear Submarine INS Arihant after the submarine returned from its first deterrence patrol, completing the establishment of the country's survivable nuclear triad."Dhanteras gets even more special! India's pride, nuclear submarine INS Arihant successfully completed its first deterrence patrol! I congratulate all those involved, especially the crew of INS Arihant for this accomplishment, which will always be remembered in our history," Prime Minister tweeted.The Prime Minister outlined that this is a major achievement, adding that a credible nuclear deterrence is the need of the hour."The success of INS Arihant enhances India's security needs. It is a major achievement for our entire nation. True to its name, INS Arihant will protect the 130 crore Indians from external threats and contribute to the atmosphere of peace in the region. In an era such as this, a credible nuclear deterrence is the need of the hour. The success of INS Arihant gives a fitting response to those who indulge in nuclear blackmail", he tweeted.Reiterating India's commitment to the doctrine of Credible Minimum Deterrence and No First Use, the statement read, "As a responsible nation, India has put in place a robust nuclear command and control structure, effective safety assurance architecture and strict political control, under its Nuclear Command Authority. It remains committed to the doctrine of Credible Minimum Deterrence and No First Use, as enshrined in the decision taken by the Cabinet Committee on Security in its meeting chaired by the then Prime Minister Atal Bihari Vajpayee on January 04, 2003."