Secretary of State John Kerry answers a reporter's question, "What do you need to see from the Iranians today to show they're serious?" Kerry replies, "I'll let you know after they've been serious."
Here are some of the top stories we're following Thursday evening at NBC News:
Kerry, Iran foreign minister pleased with tone of nuke talks
U.S. and Iranian officials emerged from high-level talks on Iran's nuclear program Thursday contented with the positive tenor of the negotiations — but noted that a lot of work lies ahead to resolve a standoff with Tehran. Read more at NBC News.
Rouhani: Iran should avoid new tension with the US
Iranian President Hassan Rouhani said Thursday that Iran should "remove tensions" with the United States. In a speech to a mostly American audience, he struck a tone that was less confrontational than the one in his address to the United Nations General Assembly three days earlier. Read more at NBC News.
World powers reach deal on removal of Syrian chemical weapons
International heavy-hitters have reached a deal to compel Syria to turn over its chemical weapons — a resolution that includes enforcement language but is not explicit on military action, sources said. Read more at NBC News.
Six arrested after wild party at ex-NFLer's New York home
Six people who allegedly orchestrated a huge unauthorized party — which left former NFL lineman Brian Holloway's New York home trashed — have been arrested and were slated to appear in court Thursday evening, officials said. Read more at NBC News.
NSA letter discloses employee eavesdropping on girlfriends, spouses
National Security Agency employees improperly eavesdropped on the phone calls of girlfriends, boyfriends, husbands, wives and spouses and engaged in other "intentional" abuses of their authority on 12 occasions since 2003, according to a newly released letter by the agency's inspector general. Read more at NBC News Investigations.
Filibuster icon Wendy Davis plans to run for Texas governor
The Texas state senator who gained national attention for a filibuster against statewide abortion restrictions is planning to throw her hat in the governor's race in 2014. Read more at NBC News.
Florida woman given 20 years for firing warning shot gets new trial
A woman who was sentenced to 20 years in prison after she fired a warning shot in a wall amid a dispute with her allegedly abusive husband will receive a new trial, A Florida appeals court has ordered. Read more at NBC News.