article_snippet: So what is the world doing about it?
article_snippet: At least 37 hostages, including three U.S. citizens, died in the seizure of, and ensuing special forces assault on, the remote facility.
article_snippet: Dozens of assailants also died in the days-long siege.
article_snippet: State Department computer expert Sean Smith and former U.S. Navy SEALs Tyrone Woods and Glen Doherty, then acting as security contractors, also died.
article_snippet: Militants have in the past kidnapped foreign workers for ransom, including three Spaniards in 2011, according to Jane's.
article_snippet: Most of the girls remain missing.
article_snippet: gunmen were accused of torturing some hostages before killing some hostages.
article_snippet: As many as 67 people died in the siege.
article_snippet: Nine arrests have been made in connection with gun attack.
article_snippet: CNN's Tim Lister and Paul Cruickshank contributed to this report.