Background
Muivah was born in Shongran (Somdal), and did his early schooling at his village and in Ukhrul.
Muivah was born in Shongran (Somdal), and did his early schooling at his village and in Ukhrul.
He completed his masters in Political Science from North Eastern Hill University (NEHU) in 1964.
He then joined the Naga National Council (NNC), an armed group campaigning for secession of Nagaland from India. He subsequently became the General Secretary of NNC. When a group of NNC leaders signed the Shillong Peace Accord with the Government of India in 1975, Muviah and some others denounced them as traitors. The NSCN was formed as a result of discontentment with the Shillong Accord, and continued secessionist activities abandoned by the NNC. The group later split into NSCN (IM) led by Thuingaleng Muivah and Isak Chisi Swu, and NSCN (K) led by Khaplang due to major disagreements.
NSCN (IM) under the leadership of Thuingaleng Muivah and Isak Swu signed a ceasefire agreement with the Government of India in August 1997 after decades of engaging in hostile fighting with Indian security forces.
The major breakthrough of the peace talk happened on August 3, 2015 with the signing of peace accord between Indian Government.
In 1980, a faction led by Isak, Muviah and Steamship Khaplang broke away from NNC to form the National Socialist Council of Nagaland (NSCN).