France, whose company Dassault has been shortlisted for supplying the multi-role medium combat Rafale aircraft, had proposed the signing of the agreement apparently to ensure that negotiations for the multi-billion dollar deal do not get affected if a different party comes to power after the Lok Sabha elections.
"The French side wanted government guarantee to the negotiations," sources said.
The Defence Ministry is still negotiating the price and terms and conditions of the contract with the French firm Dassault Aviation, whose Rafale combat aircraft was selected as the lowest bidder two years ago for supplying 126 warplanes.
Antony had recently ordered that the process to arrive at the lowest bidder in the multi-vendor tender be reviewed after completion of the whole procedure involved in the procurement as questions had been raised over it.
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The two sides are trying to tackle the issue of life cycle costs (LCC) relating to Rafale.
As per the Indian defence procedure, the firms offering lowest prices and meeting the requirements of the respective services are given the contract and in this deal to procure 126 combat aircraft, LCC has been taken into view to determine the lowest bidder.
Senior BJP leader and former Finance Minister Yashwant Sinha has written to Antony raising a number of questions over the "conceptual shift" in the defence procurement policy and expressed fears that LCC concept may bring in corruption.