Major Strickland,
No! I am not suggesting we are winning the war on drugs. I do think Columbia is one of the more successful operations. And the final success of Columbia is in the vital interest of the US. Here is why?

1-At the Strategic effects level non-drug related employment is up.
2-Tourism is up over 21%, people don't vacation in high crime areas.
3-Arresting drug king pins and asset seizure is the most effective TTP that LE has. Just recently one drug conviction resulted in over 2 Billion dollars being returned to the US Gov.
4-Mexico is a big problem and it is not just drugs. Strategypage.com just ran an article a few days ago about Cubans switching ID's with Mexicans and crossing the border into the US.
5-So much pressure is being put on Columbia that they are moving to Mexico, displacement at it's worst.
6-FARC may be the x factor that upsets the progress that has been made in Columbia.
7-Finally Columbia is critical because it has one of the largest undeveloped oil reserves in our hemisphere. With drug activity on the decrease it raises the chances of oil company investment and produce a much needed near by source of petroleum.
8- As for Mexico we should have closed the border along time ago.