"Earlier the Left parties toed the Russian line. Now they are dancing to the Chinese tune. This is the only difference in their stand," said an editorial in 'Saamana,' the Sena mouthpiece.
It argued that the Left's allegiance to Chinese interests undermines its criticism of the influence of Hyde Act on the deal.
"The Left parties claim that because of Hyde Act, India will become subservient to America. But how about the fact that they themselves are slaves of China?"
This is not the first time that the Left has threatened to withdraw its support to the government should it go ahead on the deal, it said.
The Prime Minister's recent statements on the subject indicate that the UPA, on the last leg of its tenure, has decided not to take the threat seriously.
It remains to be seen if the government will really fall if the Left carries out its threat, the paper said.