A historic deal clinched after months of negotiations.
World powers finalsed a nuclear agreement with Iran on July 14th.
But the months of diplomatic haggling could pale into insignificance compared to what comes next.
Both houses of Congress are controlled by the Republican Party.
They are vowing to vote it down; US President Barack Obama says he will use his veto if that happens.
US Secretary of State John Kerry warned last month that scuppering the deal in Washington will not stop Europe…
READ MORE : http://www.euronews.com/2015/08/05/congressional-battle-awaits-over-iran-deal
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