This chapter takes a close look into the structure, work, and evolution of the Financial Action Task Force (FATF), the Global Counterterrorism Forum (GCTF), and the Nuclear Security Summit (NSS). It analyzes how these coalitions interact among them, engaging in interesting mimesis processes that reinforce their nature as durable efforts (as opposed to mere ad hoc informal groups of States). It furthermore explores the interplay among the said coalitions and several international organizations (with a focus on the UN Security Council), in order to explain the jurisgenerative character of the formal/informal interplay.