DEBKAfile reports Israel is believed to have revived its military option against Iran - especially since Iran activated its first nuclear reactor at Bushehr on Aug. 21, thereby placing the Obama administration under enormous pressure. On top of the dire predictions of catastrophe planted on various US op-ed pages, Obama this week sent two big guns to Jerusalem to try and check an Israel attack. A guaranteed US nuclear umbrella, nuclear attack submarines for the IDF and NATO membership may be on offer.