Between Twitter and FaceTime, Facebook and Vine, it’s easier than ever for world leaders to communicate virtually. But Marcus Holmes, assistant professor of government at William & Mary, believes that might not always be the best option. [...] As important as face-to-face diplomacy is, there’s growing evidence that also suggests politicians shouldn’t delete their Twitter accounts just yet. Holmes and his team in the Political Psychology and International Relations lab also research the usefulness of digital diplomacy[.]