Interregionalism means region-to-region relations. Its relevance lies on
two assumptions: that regionalism is a significant mechanism of governance and
that regions are outward looking. The fact that both assumptions are contested confers
the concept of interregionalism a structural fuzziness. In this chapter we seek to
grasp the phenomenon by following a sequential path: we first deal with definitions,
types and theory, only then to look into the empirical evidence in search of correspondence
between names and facts. By looking into transatlantic interregionalism,
we find it as a large umbrella that brings together very diverse groupings of countries
under a same, moderately inconsequential, working mechanism: summitry.info:eu-repo/semantics/publishedVersio