s of 2009[ [update]], the government of Iran maintains diplomatic relations with 99 members of the United Nations, but not with the United States, and not with Israel—a state which Iran's government has derecognized since the 1979 Revolution. Among Muslim nations, Iran has an adversarial relationship with Saudi Arabia due to different political and Islamic ideologies. While Iran is a Shia Islamic Republic, Saudi Arabia is a conservative Sunni monarchy. Regarding the Israeli-Palestinian conflict, the government of Iran has recognized Jerusalem as the capital of the State of Palestine, after Trump recognized Jerusalem as the capital of Israel.