Chief Minister of Nagaland Neiphiu Rio on Saturday promised Nagaland's full support and cooperation to the Narendra Modi-led government at the Centre in achieving common goals of nation-building and improving the welfare of citizens.

"The people of India have given the BJP-led NDA, under your leadership, an overwhelming mandate and I am confident that under your visionary leadership, the country will scale greater heights," Neiphiu Rio said in his letter congratulating Narendra Modi on being sworn in as the Prime Minister for the second consecutive time.