The Iranian nuclear talks just went into overtime - and here's the real deadline for Obama
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Iran and the so-called P5+1 - the US, China, France, Russia, the United Kingdom, and Germany - have given themselves until July 7 to work out a final deal.
But the important date, at least for President Barack Obama and his team of negotiators, is July 9.
That's the day they need to have a deal in order for it to move swiftly through Congress.
Under a compromise bill supported by bipartisan majorities in Congress that Obama signed into law, a 60-day congressional review period on the final deal was cut in half to 30 days. But that will snap back to 60 days if Obama submits the agreement to Congress later than July 9.
According to Bloomberg's Josh Rogin, Colin Kahl, Vice President Joe Biden's national security adviser, told an audience at a conference in Washington last week that the administration is operating as if the deadline is July 9.
That stance has raised the alarm of some critics of the negotiations.
"The fact that the Obama administration is so loathe to give Congress an extra 30 days to review what will be the most consequential national security agreement of the post-Cold War era is remarkable," Mark Dubowitz, executive director of the Washington-based Foundation for Defense of Democracies, told Business Insider.
"It tells you everything you need to know about how concerned the administration is to have a serious debate on the actual deal and its consequences."
Reaching a deal by July 9 would mean Congress would have to vote to approve or disapprove the deal before it leaves Washington for its August recess. If the administration can't submit the deal until later in July, it would provide Congress some leeway - likely until September.
The lengthy debate could mean louder opposition when members of Congress return home to their districts in August, with the potential to sway public opinion and, in the end, votes over a final deal.
"There has been a lot of talk on the other side from the Iranian negotiators about whether, in fact, they can abide by some of the terms that came up in Lausanne," Obama said.
"If they cannot, that's going to be a problem - because I've said from the start I will walk away from the negotiations if, in fact, it's a bad deal.
"If we can't provide assurances that the pathways for Iran obtaining a nuclear weapon are closed, and if we can't verify that, if the inspections regime -- the verification regime is inadequate, then we're not going to get a deal. And we've been very clear to the Iranian government about that."
The Iran negotiations will prove to be a defining part of Obama's foreign policy legacy, geopolitical expert Ian Bremmer, the president of Eurasia Group, recently told Business Insider. The deal has the potential to both radically reshape Iran's role in the Middle East and its relationship with the West, including the US. Potential cooperation with Iran looms on issues like fighting the Islamic State, but closer ties with Iran would also lead to complications with key US allies.
If a deal with Iran is ultimately struck, it'll be a big part of Obama's legacy - but one Bremmer said has become tough for the president to sell as positive.
It "will be extremely controversial in Congress and among key US allies in the region (Saudi Arabia and Israel have good reason to hate it). So I think it will be challenging for Obama to sell that as effectively as positive for his legacy," Bremmer said.