Assam Chief Minister Tarun Gogoi on Thursday asked the central government to make the Naga Peace Deal public as the accord signed between the government and the NSCN-IM on August 3, 2015 is still a mystery."We welcome the Naga peace deal but it is quite astonishing why the clauses of the deal are kept in the dark. To keep such an important document under wraps for long raises doubt about its veracity," he said."Assam appreciates Naga peace deal and welcome peace in Nagaland, but we oppose tooth and nail any move that affects interests of Assam," he said while urging the centre to make the clauses of the Naga peace deal public and accord sanctity of the geographical boundary of each state under the framework of the constitution.