Hailing grant of the NSG waiver to India, a "pleased" Britain has said the move would strengthen the non-proliferation regime and make "a significant contribution" to energy and climate security.

In a race against time, a buoyant Bush Administration, happy at a rare foreign policy triumph, will try to push through the US Congress the nuclear deal with India after its ringing endorsement by the 45-member NSG in Vienna.

Ahead of Defence Minister A K Antony's crucial visit, the US said on Sunday that its military and security ties with India were "here to stay" as they were based on "shared interests".

Expressing happiness on the waiver by the Nuclear Suppliers Group to India, Department of Atomic Energy scientists on Sunday said it was a major step forward in international civilian nuclear cooperation.

With the nuclear suppliers Group giving India a waiver, the US is preparing for one more push to clear the last hurdle for their historic civil nuclear deal - final approval by the Congress.

US Secretary of State Condoleezza Rice pressed Congress to approve a nuclear deal with India after the agreement won the endorsement today from nations that supply nuclear material and technology.

Reacting to the NSG waiver, BJP on Saturday alleged that the country has fallen into the Non-Proliferation Treaty "trap" and there were many hidden deals behind the move.

The NSG waiver for India involved three days of hectic and tough negotiations with both the proponent and sceptic countries sticking to their positions but finally reaching a common ground this morning after US prodding and deft diplomacy by New Delhi.

The Left parties on Saturday made a scathing attack on the government for rejoicing the NSG waiver saying it was a "black day" as India's sovereignty had been compromised and its nuclear programme killed.

India's "legal" right to conduct nuclear tests has been fully preserved and the country has not made any commitment in this regard to gain the waiver from the NSG to participate in nuclear commerce, Anil Kakodkar said.

As many as 400 Indian and foreign firms are seen as the beneficiaries of the far-reaching verdict in Vienna on Saturday where the 45-member Nuclear Suppliers Group decided to resume civilian nuclear commerce with India.

The United States on Saturday described the granting of waiver to India by the Nuclear Suppliers Group as a "landmark decision" for strengthening the non-proliferation regime and tackling the global challenge of clean energy.

India has managed to get waiver from Nuclear Suppliers’ Group.

After months of wrangling, India has finally managed to pull off clean waiver from the Nuclear Suppliers Group in Vienna on Saturday.

Leaders of Left parties, BSP and Telugu Desam would meet President Pratibha Patil on Tuesday to demand immediate convening of Parliament session.

India got the NSG waiver by consensus, diplomats at the Vienna said on Saturday.

The White House hopes that India and the US could put the furore caused over the release of a so-called "secret letter" on Washington's position on their civil nuclear deal behind them to get the "agreement done."

India's case for a clean and unconditional waiver from the Nuclear Suppliers Group got a boost on the second day of its discussions on Friday after New Delhi's reaffirmation of its commitment to non-proliferation goals.

As the Nuclear Suppliers Group inched towards forging a consensus on clearing a waiver to India for nuclear commerce, senior Indian officials have met representatives of the few sceptic member countries to take the deal forward.

The CPI would rope in other like-minded parties to launch country-wide protests against the UPA government for "cheating" the people on Indo-US nuclear deal, the party's deputy general secretary S Sudhakar Reddy said in Hyderabad late on Thursday.

The United States has made it clear it expects India to adhere to its unilateral moratorium on nuclear testing, but would not spell out whether it would cut off supplies in the event of India doing so.

As the US disclosures on the nuclear deal triggered a political storm, American Ambassador David C Mulford on Thursday met National Security Advisor M K Narayanan and other officials in the Prime Minister's Office and is understood to have discussed the issue.

The Nuclear Suppliers Group was on Thursday night inching towards forging a consensus on clearing a waiver to India for nuclear commerce, a decision that can take the Indo-US nuclear deal forward.

CPI-M General Secretary Prakash Karat on Thursday accused the UPA government of cheating the people of the country on the Indo-US Nuclear deal.

Accusing the Prime Minister of "misleading" Parliament and the country on the nuclear deal issue, main opposition BJP on Thursday demanded the resignation of the Manmohan Singh government.