`` They do n't have a tenable position . '' ` ` They do n't have a tenable position , '' Bill Gates says of Tehran 's stance . If Tehran were to get a nuclear weapon , ` ` the retaliation would be incomprehensible , '' he says . Gates says Iran 's nuclear program is designed solely for peaceful purposes .
` ` They do n't have a tenable position , '' Bill Gates says of Tehran 's stance . If Tehran were to get a nuclear weapon , ` ` the retaliation would be incomprehensible , '' he says . Gates says Iran 's nuclear program is designed solely for peaceful purposes .