The best way for the Manmohan Singh government to convince the public about its sincerity would be to conduct a 100kT fusion weapons test in Pokhran before the monsoon session of the Parliament convenes.
This would be enough to convince the Left of the independence of our foreign policy, and it will also convince BJP about the dependability of our nuclear deterence. The question is does the government have the guts to do this -- or all this talk of super-powerdom just talk.