Panama's former dictator Manuel Noriega is seen upon his arrival at Renacer prison, outside Panama City December 11, 2011. Noriega, Panama's drug-running military dictator of the 1980s, was extradited back to the country on Sunday and taken straight to prison to serve a 20-year sentence for the murders of opponents during his rule. Noriega, now 77, was toppled in a U.S. invasion of Panama in 1989 and has spent the last two decades behind bars, first in Florida and then in France after being convicted for drug trafficking and money laundering. REUTERS/Henry Romero (PANAMA - Tags: POLITICS CRIME LAW)