By Ian Bond, Denis Corboy, William Courtney and Kenneth Yalowitz
Ian Bond is director of foreign policy at the Centre for European Reform in London, and a former British Ambassador to Latvia.
Denis Corboy is a visiting senior research fellow at King's College London and was European Union ambassador to Armenia and Georgia.
William Courtney is an adjunct senior fellow at the nonprofit, nonpartisan RAND Corporation and former ambassador to Georgia and Kazakhstan.
Kenneth Yalowitz is a Wilson Center global fellow and a former U.S. ambassador to Belarus and Georgia.