Anchored by Jake Tapper, The Lead airs at 4 p.m. ET on CNN.
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It's a story line that has become all too familiar: A young man with a gun snaps, for whatever reason, and sets out to take as many lives as he can. What emerges about the killers in the aftermath also tends to follow a similar pattern – they often showed signs of mental illness, kept to themselves, and in many instances played violent video games.
Several friends of Navy Yard shooter Aaron Alexis said he often played such games for hours.
But it's very difficult to claim that playing violent games triggers aggression and violence, said Patrick Markey, associate professor of psychology at Villanova University.
"There is really no evidence to suggest that such violent media is linked to these shootings, or really any real world violence," said Markey. "What we find in our laboratory studies are very small effects affecting our thoughts, our cognitions, but not so much affecting our actual real behaviors."
The markets exploded to record levels Wednesday, after the Federal Reserve announced that the economy is not yet strong enough and there is too much political uncertainty to stop their stimulus program. That means at least another six more weeks of free money.
If the stimulus keeps flowing, it will work to consumers' benefit and support investments. It may also keep mortgage rates from rising.
CNN's Alison Kosik reports.
On Monday they arrived at work, likely expecting another routine day at the office. But a sick man on a mission to shatter as many innocent lives as he could turned their worlds upside down.
For the survivors who escaped the Navy Yard shooting spree without physical wounds, the mental and emotional scars will no doubt linger. But that didn't stop many of them from finding the strength to return to the very scene of a real-life nightmare.
CNN's Erin McPike reports.
The U.S. and Russia gave Syria until Saturday to provide a full accounting of its chemical weapons stock pile.
Director of the Woodrow Wilson International Center Jane Harman has said the U.S. evidence on the Syrian regime is "rock solid." But now Russia said it will present evidence the Syrian rebels used chemical weapons.
Harman said this will not be a point of impasse for a United Nations resolution.
Before he was the Navy Yard killer, he was just another contractor with a security card. But Republican Senator Kelly Ayotte wants to know how did a man with a laundry list of red flags, a man who heard voices and had a history of violent outbursts, get that kind of clearance?
Democratic Senator Diane Feinstein, chair of the Senate Intelligence Committee, announced Wednesday that the committee will launch an investigation of security clearances. Ayotte said she welcomes that move, and also wants the Homeland Security and Government Affairs Committee to hold a hearing.
"The issue is one of safety in terms of the security clearances for individuals who are contractors that come in sensitive areas like the Navy Yard and other facilities across our country, we need a thorough review to make sure that people aren't getting through that should not be receiving these kinds of security clearances," said Ayotte.