Paramilitary forces deployed in Manipur:
The Centre has rushed around 4,000 paramilitary personnel to Manipur in the wake of violence following the economic blockade of the National Highways connecting the State.
Curfew was relaxed in Imphal West and Imphal East districts for nine hours on Tuesday morning.

Reason behind the escalation of tension in the territory of Manipur:
The decision was taken in the wake of violence following the economic blockade imposed by the United Naga Council since November 1 on two National Highways — NH-2 (Imphal-Dimapur) and NH 37 (Imphal-Jiribam) that serve as lifelines for the landlocked Manipur.

Nagaland CM’s appeal:
Nagaland Chief Minister has sought the intervention of the Centre and the Manipur government in securing the lives and property of Nagas in the Imphal Valley of Manipur.
He claimed that they were being prevented from proceeding to their villages in the hills. Some valley-based organisations were threatening them, he alleged.

NSF action plan:
The Naga Students Federation, meanwhile, has decided to impose a “total blockade” on all Manipur-bound vehicles, including passenger and goods carriers, in the Naga-inhabited areas till the Manipur government gave an assurance to the Nagas about their safety in the State.

What are paramilitary forces?
A paramilitary is a semi-militarized force whose organizational structure, tactics, training, subculture, and (often) function are similar to those of a professional military, but which is not included as part of a state's formal armed forces.Central Armed Police Forces were formerly referred as Paramilitary Forces.

A paramilitary may also commonly fall under the command of a military, even despite not being part of the military or play an assisting role for the military in times of war.

The term "paramilitary forces are conventionally used to refer to two forces i.e. Assam Rifles and Special Frontier Force. A uniform nomenclature of Central Armed Police Forces for five forces namely CRPF, BSF, ITBP, CISF, SSB has been adopted.