A truce worth fighting for

Walter Geovani Salguero, 30, an inmate and member of El Salvador's Mara Salvatrucha (MS-13) gang, participates in a pledge event during a news conference at the Sonsonate jail, outside San Salvador, February 8, 2013. The relentless tit-for-tat murders between El Salvador's two largest street gangs - ''Calle 18'' and ''Mara Salvatrucha'' - made the country the most murderous in the world in 2011 after neighboring Honduras, also ravaged by gang violence. That was until elders from both gangs declared an unprecedented truce that cut the homicide rate in half in just four months. REUTERS/Ulises Rodriguez