*Originally published in 2020. Get E-International Relations delivered to your inbox, free of charge. As you sign up, consider becoming a paid subscriber, or make a donation, to support our work.

We face a series of existential problems in 21st century international politics (environmental degradation, global migration, and the weaponization of nuclear material, to name just three), whose successful tackling demands radical imagination and suggests thinking beyond the box. Indeed, we are demanded to think beyond, and in radical alternatives to, those understandings of politics and policy strategies, which seem to have caused these problems in the first place. The famous Einstein-quote suits here well, saying that: “We cannot solve our problems with the same thinking we used when we created them.” Interdisciplinarity is hereby a keyword of our times, also requested as irreducible condition by many important funding agencies, promising to lead to new concepts, insights, and empirical solutions through the synergetic effects of research approaches and methods.

In this vein, I suggest to merge the two disciplines of political philosophy and policy studies with the aim to develop an understanding of politics and respective novel policy guidelines, which help to enhance radical imagination and alternatives. Such merging results in the concept of reversibility, which is........

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