Transcript by www.newsy.com BY TRACY PFEIFFER You're watching multisource global video news analysis from Newsy. Authorities in Mexico have captured one of the country's most wanted crime bosses -- Flavio Mendez Santiago, a founding member of the infamous Los Zetas gang. CCTV outlines crimes allegedly connected to Mendez Santiago and his organization. "Mendez Santiago was accused of taking part in violent killings to eliminate rival drug gangs and trafficking migrants from Central America. He's also said to have smuggled drugs from Central America and Los Zetas is the most feared gang in Mexico. Their vicious tactics, geographic reach, and expansion into new illegal businesses present a new kind of threat in the drug war." The New York Times reports the Zetas are most well known for beheading rival gang members, but they are also relatively new in Mexico. A writer for the Miami Herald gives a brief history. "Originally members of a Mexican army unit, the Zetas ... defected from the military to become enforcers for the [Gulf Cartel] in the late 1990s. Subsequently jettisoning their new employers to become an international organized-crime entity in their own right, in recent months the two groups have waged a brutal battle for control." The story has been greeted with cautious optimism in the media, most of which are looking to the big picture to gauge the possible effects of the catch. (Video KENS) Bloomberg-BusinessWeek says Mexican authorities have now captured 20 of the ...