From the list, my choice is 'Liberalism'. I voted 'other'. This other option is a Revolutionist / Kantian theory of International relations.

This is not a descriptive, but a normative preference. That is, it doesn't describe what is, but what ought to be.

Spoiler Alert, click show to read: 
Wiki:

Immanuel Kant favoured a classical liberal approach to political philosophy.[1] In Perpetual Peace: A Philosophical Sketch (1795) Kant listed several conditions that he thought necessary for ending wars and creating a lasting peace. They included a world of constitutional republics.[2] This was the first version of the democratic peace theory. Critics of the European Union assert that the Union's relative inability to establish itself as an influential external policy entity in the international level stems from the fact that the EU's institutions function on Kantian premises and are therefore ill-equipped to face the more primitive, non-Kantian world outside.

He opposed "democracy", which, in that era, meant direct democracy, believing that majority rule posed a threat to individual liberty. He stated, "…democracy is, properly speaking, necessarily a despotism, because it establishes an executive power in which "all" decide for or even against one who does not agree; that is, "all", who are not quite all, decide, and this is a contradiction of the general will with itself and with freedom."[3]

A distinctive feature of Kant's political philosophy is his conviction that the university should be a model of creative conflict: the philosopher's role within the university should be to "police" the higher faculties (which in his day were theology, law and medicine), making sure their teaching conforms to the principles of reason; likewise, the goal of perpetual peace in society can be achieved only when the rulers consult with philosophers on a regular basis