As West Bengal picks its next government, Congress leader Pranab Mukherjee talks to NDTV’s Barkha Dutt about why Mamata Banerjee gets away with calling the shots in her alliance with the Congress in Bengal. Mr Mukherjee says that his party needs Ms Banerjee to defeat the Left in its stronghold. He also admits that at several cabinet meetings, he has lost his temper with Ms Banerjee, who is the Railways Minister. "That's my bad temper and my mistake," he said.