The 2016 Nobel Peace Prize was awarded to the President of Colombia Juan Manuel Santos "for his resolute efforts to bring the country’s more than 50-year-long civil war to an end, a war that has cost the lives of at least 220,000 Colombians and displaced close to six million people." The conflict is the longest running war, and last remaining guerrilla struggle, in the Americas. The Nobel Peace Prize is awarded annually to those who have "done the most or the best work for fraternity between nations, for the abolition or reduction of standing armies and for the holding and promotion of peace congresses". The announcement was made on 7 October at a press conference at the Nobel Peace Center, and the formal award ceremony took place on 10 December at the Oslo City Hall.