It was yet another embarrassment for the government at the hands of its ally, the Trinamool Congress when Mamata Banerjee's party moved amendments against the Lokpal Bill in the Rajya Sabha yesterday. But the government is trying to put up a brave front. "There are differences with allies, but won't say Trinamool Congress's approach is confrontational. We will speak to them," Home Minister P Chidambaram said today.