Divorce

> Does anyone know how a non-Jew (non-Christian) American can get a
> divorce in Israel if it is possible at all?

Getting a divorce in Israel is under the jurisdiction of the Religious courts. The couple should turn to the court closest to their religion (ethnic or practiced), and seek their advice.
This is not an easy process in any religion and the couple is best advised to try their luck in a country with a secular divorce system.
THere is also a "family court" system - which is authorized to discuss the monetary side of the divorce, but not to issue their own divorced.