Iran Nuclear Deal Moves to Battleground of US Congress

The battle over the Iran nuclear agreement is set to move to Washington as the Obama administration begins a three-month campaign to stop the hard-won deal being derailed by congressional Republicans.
The deal – reached in a Vienna hotel early on Tuesday morning after prolonged talks between foreign ministers – binds Iran, the US, UK, France, Germany, Russia and China to a series of undertakings stretching over many years.