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KNOW IT ALL: Tuesday's Top 6 Stories at NBC News

From a looming nuke deal to a governor's defense of a controversial law, see the stories we're following.
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/ Source: NBC News

Good morning. Here are some of the stories we’re following today:

1. Iran nuclear deal deadline looms

Iran and six world powers have less than 12 hours to arrive at a nuclear deal before a self-imposed deadline arrives at midnight (6 p.m. ET) where they're meeting in Switzerland. It's unclear whether or not the deal will be met or extended. One hurdle has been getting Iran to curtail its research and development on nuclear activity for at least 10 years. The timing of sanctions relief for Iran, if a deal is reached, and the way the deal is announced have also been points of contention. As Secretary of State John Kerry and his counterparts from the P5+1 sat down Tuesday with Iran's Foreign Minister, a reporter asked whether a deal could be reached that day. "You'll have your answer before the end of the day," Kerry replied. Read more in NEWS.

2. Indiana Gov. Pence blames Obamacare for controversial law

Indiana's "religious freedom" law, which Indiana Gov. Mike Pence signed last week, has provoked a wave of backlash from opponents, who say it could be used to allow businesses to discriminate against same-sex couples. Many have vowed to boycott doing business in or with the state as a result of the law, which is due to go into effect in July. "I abhor discrimination," Pence wrote Monday in an op-ed in the Wall Street Journal. He said the law isn't meant to limit the rights of same-sex couples and that he largely supported the law because Obamacare "renewed concerns about government infringement on deeply held religious beliefs." Read more in NEWS.

3. Hospital on lockdown after armed prisoner escapes

A prisoner armed with a gun and wearing just a hospital gown was being hunted after escaping from the custody of a private security guard at Fairfax Hospital in Falls Church, Virginia, early Tuesday morning. The hospital was locked down because the fugitive, Wossen Assaye, is considered "armed and dangerous." According to a 2012 Virginia Parole Board document, Assaye has an "extensive criminal record" and "history of violence." Shots were fired at the hospital during the morning, but it's unclear who fired them. Read more in NEWS.

4. Germanwings co-pilot was treated for suicidal tendencies

Andreas Lubitz, the co-pilot who is accused of slamming a Germanwings Airbus into the French Alps last week, was treated in the past for suicidal tendencies, officials said Monday. Psychotherapists observed Lubitz was suicidal before he got his pilot's license. A prosecutor said that since then, Lubitz had several follow-up appointments with doctors, who recorded he was unable to fly. The more recent documents showed no hint of Lubitz being suicidal or aggressive, though, the prosecutor said. Read more in NEWS.

5. U.S. files appeal of judge's hold on Obama's immigration action

The Justice Department urged a federal appeals court Monday to reverse a hold a judge placed on President Barack Obama's immigration executive action. The executive action that could prevent as many as 5 million people from deportation was challenged in February by a coalition of 26 states, led by Texas. The states said Obama's action was unconstitutional and would cause the economic harm. The Justice Department says the states have failed to show exactly how they would be negatively affected by the executive action. Read more in NEWS.

6. Bill to hide police identities after shootings vetoed in Arizona

Republican Arizona Gov. Doug Ducey vetoed a bill that would have kept the identities of police officers who use deadly force concealed for 60 days. Ducey said the intention of the bill was to protect police officers, but it would do the opposite because the wrong officer's name could get out. "The result could be the exact opposite of what this bill aims to do, escalating — rather than de-escalating — the situation and potentially putting completely innocent officers' reputations and safety on the line," he wrote in a veto letter. Read more in NEWS.