Just in: Mamata Banerjee will not participate in the UPA meet tomorrow to decide the presidential nominees. The UPA is to meet at 11 am. No surprises there.

The Trinamool Congress has emerged in recent months as the most troublesome ally of the Congress in UPA having shot down a number of key proposals of the government. It has also created embarrassment for the UPA on issues like the Teesta water sharing agreement with Bangladesh as well as on the agreement on the exchange of enclaves with that country.