Excellent discussion of the complexity of the Colombian environment. The only point I would quibble with you about is the threat of a coup. Since 1902 Colombia has had only one extra-constitutional change of government and that was in 1954 when General Rojas Pinilla was asked by a large group including members of both political parties who were then engaged in the civil war called La Violencia to seize power. He did. Four years later the parties agreed on the National Front power sharing government that alternated them in power for 20 years but guaranteed constitutional transitions. The Colombian military generally has chosen not to participate as a typical political actor - it is not coup prone.

A note on drug corruption: Good people can easily get caught up in it, especially in Colombia. This includes Americans like COL J. C. Hiett who was MILGP commander, and DEA Agent Rene de la Cova who headed the office in Bogota. Both have done time but some might well suggest that their sentences were mere slaps on the wrist.