The attack on the Chief Minister's life underline that the PLA and its affiliate groups - with camps in Bangladesh and Myanmar and close contacts with Pakistan's ISI - are not inclined to join any peace process.
The massive seizure of ammunition and explosives from an Indian insurgent group on Bangladeshi soil go further to strengthen India's claim that insurgency in its Northeast depends on alien support.
The recent killings in Tripura, which has 856 kilometres of common border with Bangladesh, highlight the lack of will to bring an end to violence that is lacking at every level - in Dhaka , at Delhi, and in Agartala.