With lawmakers focused on Iran and 2016 looming, its unclear when Congress will act.
The program is speeding up after a shaky start, the Pentagon said.
Tyler Drumheller served in the CIA for 26 years and was a critic of the Iraq War.
"The discussion about the day after is not very pretty," said Energy Secretary Moniz.
"What I said is absolutely true, factually," Obama told CNN.
The misinformation campaign is an obstruction to uncovering facts and a disservice to the US.
"The purpose of the military is to kill people and break things," he said.
The heir apparent to the role of Senate Democratic leader is poised to break with Obama.
Her in-state colleague Charles Schumer is perhaps the most important Senate vote on the nuclear...
He said the administration's diplomacy-versus-war argument is "absurd."
The Tennessee Republican is increasingly skeptical of the deal.
The Foreign Relations Committee chairman suggested lawmakers could take it up later this year.
The administration is seeking to defend Syrian rebels from ISIS and the Assad regime.
The State Department lifted a ban earlier this year.
Rep. Brad Sherman (Calif.) said the deal "gets ugly" in later years.
Middle-class military families plan to spend less amid anxiety over budget cuts.
One group said the would-be Senate Democratic leader's nickname should be "Warmonger Chuck."
The group said it is launching a "donor strike" to protest Schumer's opposition to the deal.
Walker and Cruz said they would cancel the deal if president.
The agreement "is not about becoming friends with Iran," Sen. Jeanne Shaheen said.
A think tank said Iran might be trying to remove "incriminating evidence."
"Everything in this Congress squeaks by," he said during a private meeting with journalists.
Grassley tied his move to delays over his questions about Clinton's emails and a top aide.
Obama responded to Rep. Steve Scalise, denying GOP claims of "secret side deals."