Like some treaties

BILATERAL

["Involves two parties or sides, often seen in agreements between countries to ensure mutual benefits."]

The clue "Like some treaties" hints at a word describing agreements between two parties. "Bilateral" fits because it literally means involving two sides, which is how many treaties are structured. The word breaks down into "bi-" (meaning two) and "lateral" (relating to sides), making it a straightforward definition without any hidden wordplay.