As a first recommendation, I will refer to a very popular fact, known to any economist, that combating narcotics at the site of their production leads only to the rise of prices and does not liquidate their demand. When it was revealed that the USA are provided with drugs with the direct help of Panama's dictator Nuriega, the Americans sent troops and overthrew the dictator. Cause and effect are often confused as demonstrated by the military operation in Panama. One shouldn't think that confiscation of drugs can stop their usage. One cannot stop narcotics without first stopping Anarchy.
American leaders do nothing to eliminate the demand for narcotics inside their country.
They do not wish to use unpopular methods that could bring the criticism of the left-wing. Combating terrorism is not any different from the fight against narcotics. First, one should not confuse cause and effect. At first Anarchy in the country must come to its end, because it broods terrorism and gangs. The next step concerns the import of terrorism into the country.