What are the legal options for two Lesbians in Israel who wish to marry?

Single sex marriage (between Lesbians or Homosexuals) does not exist in Israel.However, it is possible for single-sex couples who wish to marry to do so in a ceremony abroad, in a country where such a union is legal,and then register the marriage at the Ministry of Interior in Israel. At least one of the two sides to the marriage should be a resident or citizen of Israel.