A.R.S. § 14-10107: Governing law

A. The meaning and effect of the terms of a trust are determined by the law of the jurisdiction designated in the terms of the trust instrument.

B. In the absence of a controlling designation in the terms of the trust, the laws of the jurisdiction where the trust was executed determine the validity of the trust, and the laws of descent and the law of the principal place of administration determine the administration of the trust.