‎ Mounting Congress-TMC tension over a string of issues in the recent past reached something of a pitch in West Bengal yesterday with the Trinamool Chief daring the Congress to quit the state government if "it so wanted" and work with CPM. Referring to the row in Raiganj college where the conflict between Congress and Trinamool student wings led to the assault of the college principal.Mamata spelt out the differences in the local context but she made it clear that the implications were national.