Taking a dig at the Left Front on its stand on the Indo-US nuclear deal, country's top nuclear scientists on Friday sought to know as to who they were 'trying to please.'

Terming the Left parties as 'unreliable,' Dr Homi N Sethna, former chairman of Atomic Energy Commission, said: "Left is always disruptive� Whom are they trying to please?"

Left parties have certain stakes both within the country and outside, he told PTI on the sidelines of Bhabha Atomic Research Centre's training school's 50th graduation function on Friday.

Ridiculing the formation of a committee to discuss the 123 agreement in relation to the Henry Hyde Act, Dr K Iyengar, another former chairman of AEC, said: "Political committee of this kind cannot come to any conclusion, as they do not know the nuances of the deal."

"I wonder why a parliamentary debate was not held on the issue and instead a committee is set up to please the Left Front by the UPA government," he quipped.

Meanwhile, National Security Council member M R Srinivasan said, "The Left Front does not seem to realise larger impact of the Indo-US deal."

Left should realise that it is an opportunity for India to have collaboration with other countries besides the US, Srinivasan said, adding that if they (Left Front) were really interested in high GDP, they should allow the increase in the prospects for nuclear energy.

"The Left seems to think that India is trying to be close to US while they should know even China and Vietnam are coming close to US," he said.