Argentina has opened a landmark trial of figures involved in Operation Condor, a coordinated effort by Latin American military rulers to target their political opponents in the 1970s and 1980s. With U.S. backing, dictators and generals in Argentina, Uruguay, Chile, Bolivia, Paraguay and Brazil collaborated to hunt down and assassinate dissidents opposed to their rule. The Argentina case accuses 25 suspects of violating human rights, including former dictators Jorge Videla and Reynaldo Bignone. The trial marks the first specially focused on Operation Condor and its victims across Latin America.