An imprisoned member of street gang Mara 18 poses for a photograph at the Izalco prison, about 65 km from San Salvador, El Salvador, on May 20. Inmates handed over handmade knives and more than 60 cell phones and other not-permitted articles in an effort to keep the truce between the country's two most powerful gangs Mara 18 and Mara Salvatrucha (MS-13), following a truce treaty signed by both sides in March 2012 to reduce violent crimes in the country. Reuters/Ulises Rodriguez