Petraeus Urges (Diplomacy) Towards Iran as (Obama mention)
Petraeus said the possibility of military action against Iran should be retained as a “last resort.” But he said the United States “should make every effort to engage by use of the whole of government, developing further leverage rather than simply targeting discrete threats.”
http://www.huffingtonpost.com/2008/05/22/petraeus-urges-diplomacy_n_103044.html