AIZAWL, May 13 — Vipin Haokip, self-styled chief of the Kuki National Army (KNA), the armed wing of Kuki National Organisation (KNO), today said his outfit was willing to negotiate with the Centre on its demand for a separate state for the Kukis, reports PTI. The negotiations should lead to an amicable settlement by establishment of tripartite arrangement to accommodate Meiteis, Nagas and Kukis, Haokip told PTI.