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Know It All: Friday evening's top stories from NBC News

Advisers have weighed in, allies have balked and Congress is unsure. Now it's up to President Barack Obama to decide what to do about Syria.
Advisers have weighed in, allies have balked and Congress is unsure. Now it's up to President Barack Obama to decide what to do about Syria.NBC News

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

Obama considering 'limited, narrow act' against Syria

While President Barack Obama said Friday that he hasn't made up his mind yet, he promised that any U.S. response to Syria's alleged use of chemical weapons would a "limited, narrow act." Read more on NBC News

Snowden took much more than was thought

British authorities told a judge Friday that David Miranda, the partner of Guardian journalist Glenn Greenwald, was carrying 58,000 documents related to British intelligence on electronic devices when he was stopped and searched at Heathrow Airport on Aug 18. That's at least three times as many highly sensitive documents taken by National Security Agency leaker Edward Snowden — Greenwald's source — as was previously reported. Read more on NBC News

Desperate search for New Orleans toddler's killer

Police are pleading for people to come forward with information about the killing of 1-year-old Londyn Samuels, who was shot dead Thursday in her babysitter's arms in New Orleans. Read more on NBC News

Memory of accuser in Naval Academy sex-assault trial questioned

The alleged victim in a Naval Academy sexual assault case finished her third day of cross-examination as a lawyer for one of the three defendants challenged her on more inconsistencies in her statements to investigators. Read more on NBC News

Dawn of a new legal marijuana era?

Advocates for legal marijuana are celebrating the Justice Department's decision not to sue Washington and Colorado for permitting recreational marijuana use. "All of a sudden, they have decided to let the states experiment with different levels of legalization. That's precisely what happened at the end of alcohol Prohibition," said Keith Stroup, founder of the National Organization for the Reform of Marijuana Laws. Read more on NBC News

For first time, Supreme Court justice will officiate at a same-sex marriage

Supreme Court Justice Ruth Bader Ginsburg was preparing to officiate at the marriage Saturday of a longtime friend, John F. Kennedy Center for the Performing Arts President Michael M. Kaiser, to economist John Roberts in Washington — the first time a member of the court has done that. Read more on NBC News