As I do not have the facility of writing up in Thamizh I am writing this in English.
I suppose, you have not done in depth studies on North East Problems, for the following reasons.
1. The problems are inherited from British rule. Their strategy is divide and rule. You can see in TN. They sowed the myth theory of aryan-dravidian clash. As a result, even high level intellectuals are not able to come out of their theory of aryan-dravidian, in spite of clinching evidences to suggest there is no such invasion, ever occurred in India.
2. The problem, sowed by the British, is fanned by Chinese. The British to quell the Naga Sadhu Agitation, planted lots of priests of x-ian religion in the garb of social work. Naturally, well connected, with the powers of the rulers, the x-ian priests were doing the divide and rule policy, of segregating Hindus into upper and lower castes. (This we will take up some other time). After the leaving of the British, the Chinese wanted to help the dividing powers by supplying arms and new found theories of Naxalism and Maoism and Communism. This also targeted against majority Hindus (now they are not majority).
3. In support of my argument, in point No.2, I would like to quote a news item appeared in Indian Express during economic blockade recently announced by Naga politicians, against Manipur. Manipur, is, one of the best places in India, and most of the people worship Lord Krishna. An army officer, wrote an article saying, in effect, that X-ians are blocking the traffic for Hindus for refusing to toe the lines of x-ian separatists.
4. Again, why a prominent leader of Naga separatist by name Muviah, is given asylum in Germany and the Indian government conduct negotiations with him giving all the facilities? Who is there to clarify what is happening in Nagaland? Both the big political parties Cong and BJP have miserably failed to solve this problem, is the truth before our vision.
To conclude, I would like to present my opinion as – the North East problem is nothing but driving out Hindus from their homeland.