For decades, Israel coyly has refused to confirm or deny what, since 1986, the whole world has known for sure: that is that the Jewish state is the one country in the Middle East that has a well-developed, nuclear arsenal. It was 20 years ago that Mordechai Vanunu, a former technician at Israel's Dimona nuclear facility in the Negev Desert, informed Britain's Sunday Times about the weapons program, leading defense analysts to rank the country as the [world's] sixth largest nuclear power." Vanunu was jailed for 18 years for revealing state secrets. Israel calls its refusal to deny or confirm the existence of its nuclear arms its "nuclear ambiguity" policy. Why? Explains the Times (U.K.): "For many years, Israel was the only country outside the five declared nuclear powers to have built an atomic weapon ... It wanted its enemies in the region to know that it had nuclear capability if threatened. But it also wanted to keep the existence secret so that it did not fall [a]foul of international action designed to halt the proliferation of nuclear weapons, particularly strict U.S. laws which could have jeopardized billions of dollars in annual aid." The Jerusalem Post notes that "Nuclear ambiguity was a comfortable arrangement for both Israeli and U.S. administrations, designed to allow Israel to get on with whatever it was doing ... without too much international pressure, and [to allow] the U.S. to not seem too hypocritical by not demanding its Middle East ally sign the [Non-proliferation Treaty]. Ambiguity might have worked for four decades, but ... it is now hopelessly outdated."