International friendship affects the making and conduct of foreign policy, an angle that is largely neglected in the International Relations (IR) literature. Friendship constitutes the Other as familiar rather than foreign and implies a significant degree of trust, and analysts need to pay careful attention to the various ways close bonds develop and “work” across state boundaries. They need to understand how seeking friends can be an explicit goal of foreign policy and how established friendships function by studying their discursive, emotional, and practical expressions and their impact on decision making in concrete situations and as a disposition for cooperation in the long term. Yet, tracing these bonds and associated practices, especially the informal ones, is an analytical challenge. This article presents international friendship as a particular relationship of mutually agreed role identities embedded in a strong cognitive, normative, and emotional bond revolving around a shared idea of order. It discusses three types of practices unique to this relationship: providing privileged/special access, solidarity and support in times of need, and resolve and negative Othering against third parties. These friendship bonds and associated practices can be observed across three levels: political leaders, government bureaucracies, and civil society.