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Know it All: Friday's top stories at NBC News

Here's a snapshot of some of the top stories NBC News is following Friday:

‘Shameful milestone’ in Syria

The United Nations’ refugee chief revealed in an exclusive interview with NBC News’s Ann Curry that one million children have now become refugees as a result of the ongoing strife in Syria. The “shameful milestone” – in which 75 percent of the children involved are under 11 – is not the end, High Commissioner for Refugees Antonio Guterres said, with two million more Syrian children displaced within the embattled nation. Read Ann Curry’s exclusive interview.

Aussie pol: America’s gun culture 'corrupting the world' 

Former deputy prime minister of Australia Tim Fischer has said citizens of his country should steer clear of the United States because of its “illogical” gun laws. Fischer’s comments came after 22-year-old Christopher Lane, an Australian, was shot and killed while jogging in a neighborhood in Duncan, Okla. America’s gun culture is “corrupting the world” Fischer said. Read it at NBC News.

Unrest in Egypt

The continuing political uncertainty in Egypt has caused some in the troubled country to look back fondly on its pre-Arab Spring military government – even as autocratic general Hosni Mubarak, who headed that regime, was flown from jail on Thursday. “I’m happy he will get out,” one Egyptian woman said. “In his time, it was secure and we could eat.” Read it at NBC News.

Carl Icahn wants a bite of Apple?

Billionaire investor Carl Icahn – who on Aug. 13 took to Twitter to announce he’d taken a large position in Apple stock – was back on the social media site Thursday to say he’d be having dinner with Tim Cook, chief executive at the world’s sleekest tech company. Remember, Carl: It’s not polite to use your iPad at the table. Read it at NBC News Business.

Police: Couple plotted to kill Las Vegas cops

A couple spent four months planning the elaborate deaths of Las Vegas police officers, police said – but an undercover officer was with them as they prepared a house for their alleged scheme. SWAT arrested David Allen Brutsche and Devon Campbell Newman, who allegedly wanted to kill cops to draw attention to their “sovereign citizens” ideology. Read it at NBC News.

Holy smokes, Affleck!

The latest incarnation of Batman is to be played by none other than Ben Affleck, Warner Bros. has announced. The name of the feature flick in which the actor-director will put on the Dark Knight’s cape has yet to be released, but it’s due out in the summer of 2015 – and at Comic-Con thus summer, the studio revealed the film would pit Gotham’s defender against Superman. Read it at TODAY.

Ryan Braun admits use of banned substances

After accepting a suspension for the rest of the season last month, Milwaukee Brewers slugger Ryan Braun released a lengthy statement explaining his use of performance enhancing drugs, and apologizing to the fans. “I have no one to blame but myself,” the 2011 National League MVP said. “For a long time, I was in denial and convinced myself that I had not done anything wrong.” Read it at NBC Sports.