"It could lead to a weapons program inside of Iran that could lead other states in the region to embark on their own programs," Brennan said in an interview with the BBC aired on Wednesday.
Brennan also said that in dealing with the Syrian crisis, Trump should be cautious in trying to work with Russia.
CIA`s Brennan says tearing up Iran deal would be `folly`
30 November 2016
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Outgoing CIA Director John Brennan has said it would be the "height of folly" for US President-elect Donald Trump to tear up Washington`s deal with Tehran because it would make it more likely that Iran and others would acquire nuclear weapons.
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