Israel calls baseless the findings of a new book which provides evidence the country offered to sell nuclear warheads to South Africa in 1975. The documents, uncovered by a U.S. researcher make up the first official evidence Israel has nuclear arms. Israel is believed to have more than 200 atomic warheads at its Dimona reactor. The country's leaders maintain a policy of 'ambiguity' over whether the Jewish state is a nuclear power. Journalist and peace activist Gideon Spiro believes everybody who opposes Israel's nuclear policy is a hero.