Context: A multilateral treaty is concluded among several countries. The agreement establishes rights and obligations between each party and every other party. Multilateral treaties are often regional.[citation needed] Treaties of "mutual guarantee" are international compacts, e.g., the Treaty of Locarno which guarantees each signatory against attack from another.

Question: What is a treaty concluded among several countries?
Answer: A multilateral treaty

Question: Between which parties does a multilateral treaty establish rights and obligations?
Answer: each party and every other party

Question: The Treaty of Locarno guarantees each signatory against what from another signatory?
Answer: attack

Question: What type of treaty is a mutual guarantee?
Answer: international compacts

Question: Multilateral treaties are often entered into by countries that share the same what?
Answer: region