This paper returns to some themes found in David Mitrany's classical ‘functionalist’ approach to international politics, in order to reconstruct practical principles that might be applied to contemporary politics as well as debates in International Relations and international political theory. It attempts to do this through two moves — ‘restoration’ and ‘contemporary reconstruction’. In restoring some of the insights Mitrany provides us that have been somewhat obscured over time, the paper hopes to demonstrate the ‘function’ behind functionalism — that its (...) core assumptions as an approach (if not ‘theory’) to international politics can prove to be just as instructive today as they were during the several decades of their initial development by Mitrany. Reconstruction, however, is necessitated by the observation that some of Mitrany's aspirations for functional theory — namely that it would produce ‘bonds’ that not only transcend national communities, but provide for the unraveling of the nation-state system as we know it — were a bit utopian. Thus, the paper proposes several avenues to reconstruct classical functionalism for contemporary politics. The paper then discusses three small empirical illustrations where micro-political insights can be extracted and briefly analysed: peace camps, the Regional Cooperation Council of the former Yugoslavia, and a more detailed analysis of the so-called ‘surge’ strategy in the ongoing US-Iraq conflict. It concludes with a two-pronged discussion on how micro-politics might speak to current debates in international political theory, and some mechanisms for securing functional spaces. (shrink)