Somnath is clever and selfish like other left leader, He knows well that that he enjoyed ministry and Speaker(a post of of national importance arena) and their is no chance to become PM for the left leaders with this attitude.There may be chances in future that Cong & left may share the PM post for 2 and 1/2 years each then by this move at some point of time may be asked to become PM and get the high honour cremation after death.
