He said that from the very beginning he had termed the agitation against implementation of KNPP as "anti-national".
"I welcome the long overdue judgement of the Supreme Court on the validity and importance for the nation of the KNPP.
"Now that the matter has been finally settled by the SC after hearing both sides, the Government of India must crackdown on any further agitation if it takes place, and which disrupts the schedule for the completion of the project," Swamy said.
He demanded that the Government of India must arrest all anti-national leaders of this agitation under National Security Act and urged Tamil Nadu government to cooperate and "not engage in competitive politics with the DMK."
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Swamy alleged that the KNPP had terrified certain Western European nations which had planned to sell India outdated nuclear reactors following the signing of Indo-US Nuclear Treaty.
The apex court today cleared hurdles in commissioning of the controversial Kudankulam nuclear plant, saying safety and security requirements have been taken care of and the project would benefit larger public interest.