Students to US President: Stop Gun Violence Now

A week after the Florida shooting, survivors make tearful pleas during meeting at the White House. Also: UN to vote on Syria ceasefire

(Photo: 18-year Samuel Zeif, whose best friend Joaquin Oliver died in the February 14 shooting at Florida's Marjory Stoneman Douglas school, weeps during a White House 'listening session' with President Trump. Survivors of some of the United States' worst mass shootings called for immediate action to stop gun crime. Credit: Chip Somodevilla/Getty Images)