noun. One agreed upon or appointed to judge or decide a disputed issue; an arbitrator.

noun. One whose opinion or judgment is considered authoritative or worthy of respect.

noun. A person chosen by the parties in a controversy to decide their differences; one who decides points at issue; an arbitrator; a referee; an umpire.

noun. In a general sense, a person who has the power of judging and determining absolutely according to his own pleasure; one whose power of deciding and governing is not limited; one who has a matter under his sole authority for adjudication.

To act as arbiter between; judge.

noun. A person appointed, or chosen, by parties to determine a controversy between them.

noun. Any person who has the power of judging and determining, or ordaining, without control; one whose power of deciding and governing is not limited.

transitive verb. To act as arbiter between.

noun. A person appointed, or chosen, by parties to determine a controversy between them; an arbitrator.

noun. A person or object having the power of judging and determining, or ordaining, without control; one whose power of deciding and governing is not limited.

verb. To act as arbiter.

noun. someone chosen to judge and decide a disputed issue

noun. someone with the power to settle matters at will

"While inviting Iran to the upcoming conference on Afghanistan seems like a prudent move — engaging Iran first on a key area of mutual concern rather than going after the big issues outright — it’s important to remember that Khamenei is the main arbiter of Iran’s foreign policy."

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