Philosophical system and Unilateralism

Philosophical system noun - A belief (or system of beliefs) accepted as authoritative by some group or school.

Unilateralism and philosophical system are semantically related. In some cases you can replace term "Unilateralism" with "Philosophical system", this terms are similar.

Unilateralism noun - The doctrine that nations should conduct their foreign affairs individualistically without the advice or involvement of other nations.

Philosophical system and unilateralism are semantically related. You can use "Philosophical system" instead a noun "Unilateralism".