ally prohibited the extradition of Colombian nationals, causing accusations that drug cartels had successfully lobbied for the provision; extradition resumed in 1996 after the provision was repealed. The cartels had previously promoted a violent campaign against extradition, leading to many terrorist attacks and mafia-style executions. They also influenced the government and political structure of Colombia through corruption, to such label that by 1996 up to the third part of the senate were put by the mafia. This circumstances were extensively uncovered in the justice case called the "8000 case" 8000 Process which was the biggest political scandal of the 90s.
Since the promulgation of the Constitution of 1991 and the reforms made, the country has continued to be plagued by the effects of the drug trade, guerrilla insurgencies like FARC, and paramilitary groups such as the AUC, which along with other minor factions have engaged in a bloody internal armed conflict. President Andrés Pastrana and the FARC attempted to negotiate a solution to the conflict between 1999 and 2002. The government set up a "demilitarized" zone, but repeated tensions and crises led the Pastrana administration to conclude that the negotiations were ineffectual. Pastrana also began to implement the Plan Colombia initiative, with the dual goal of ending the armed conflict and promoting a strong anti-narcotic strategy.
Colombian armed conflict, 2002 – present
During the presidency of Álvaro Uribe, the government applied more military pressure on the FARC and other outlawed groups. After the offensive, supported by aid from the United States, many security indicators improved. However this improvement has been criticized questioned for the Colombian Army's continued violations of Humans Rights and also questionable statistics. Reported kidnappings showed a steep decrease (from 3,700 in 2000 to 172 in 2009 (Jan.-Oct.)) as did intentional homicides (from 28,837 in
