It is of the view that a new constitution is to be introduced to annul the country’s unitary status, in the pretext of abolishing the executive presidency.
The joint opposition is expected to have a meeting next week at the parliamentary complex.
The government is due to launch a process for a new constitution on January 09.
A theoretician of the joint opposition Prof. Nalin de Silva says the proposed constitutional council is unlawful, and that the joint opposition should give leadership for a political struggle against it.