After promising support to the United Progressive Alliance government over the 2G Spectrum controversy, Trinamool Congress chief Mamata Banerjee took the Congress by surprise when she joined the Opposition in their demand for a joint parliamentary committee on Monday.
Banerjee did a U-turn at the all-party lunch meet hosted by Union Finance Minister Pranab Mukherjee on Monday afternoon, joining the Bharatiya Janata Party and the All India Anna Dravida Munnetra Kazhagam in