Bound to follow? The Anglosphere and US-led coalitions of the willing, 1950–2001

This article addresses the question whether membership in the ‘Anglosphere’ — a grouping of English-speaking states/nations — impacts the likelihood of participation in US-led coalitions of the willing. I translate the Anglosphere into International Relations (IR) theory using a tripartite division of realism, liberalism and constructivism. In a quantitative empirical analysis of a sample of US-led military coalitions between 1950 and 2001, I find robust evidence of what can be seen as the Anglosphere effect: all else constant, English-speaking states/nations tend to be more willing to join US-led military coalitions than states/nations selected at random. I conclude with a discussion of future research avenues in the Anglosphere agenda in IR.