Know It All: Tuesday evening’s top stories from NBC News

Here's a snapshot of some of the top stories we're following Tuesday evening:

Senators draft resolution to limit Syria action to 90 days, no boots on the ground

Leaders of the Senate Foreign Relations Committee said Tuesday they reached an agreement on a draft resolution to use military force in Syria, setting a 60-day deadline, with one 30-day extension possible for the intervention -- while also barring the involvement of ground forces in the conflict. Read more on NBC News

EXCLUSIVE: Susan Rice says administration 'quite confident' Congress will OK Syria action

In an exclusive interview with Brian Williams on NBC Nightly News, National Security Adviser Susan Rice said the White House is "quite confident" that Congress will approve Obama's plan to launch punitive cruise missile strikes against Syrian President Bashar Assad's regime. Read more on NBC News.

Brain over brawn: Diana Nyad's swimming success is all in her head

Diana Nyad, 64, swam 110 miles between Cuba and Florida, finishing Monday, the first person to do so without a shark cage. But in the end, experts say, her success came down to one essential part of her body – her mind. Read more on NBC News.

Microsoft's new employee is a man of two reputations

Stephen Elop, who is stepping down as Nokia’s CEO to run Microsoft's devices group as a result of the tech giant’s $7.2 billion purchase of the Finland-based company’s cellphone service, will grapple with a new kind of task: proving that he deserves front-runner status to replace Steve Ballmer, Microsoft’s current CEO, who will step down in the next 12 months. Read more on NBC News.

How Japan's ice barrier will seal off Fukushima's nuclear ruins

Japan’s government gave the go-ahead on Tuesday to spend hundreds of millions of dollars to create a underground barrier of frozen earth around the stricken Fukushima nuclear plant. Read more on NBC News

Embattled Montana judge orders new sentencing for teacher convicted of sex with student

Former Billings Senior High School teacher Stacey Dean Rambold, 54, will be back in court Friday after state District Judge G. Todd Baugh said Tuesday that he'd misread state law and that he now believed Rambold should have faced, at minimum, two years in prison. Read more on NBC News.

Brian Williams returns to Nightly News

NBC Nightly News host Brian Williams returned to the anchor desk Tuesday after undergoing knee replacement surgery. Read more on NBC News.