drug trafficking. And those cables come not just from Mexico City, but from many corners of the world -- including Cuba and several embassies in West Africa.

Dozens of the U.S. diplomatic cables obtained and published by WikiLeaks cover a worldwide phenomenon that has been persistently troubling to the United States: drug trafficking. And those cables come not just from Mexico City, but from many corners of the world -- including Cuba and several embassies in West Africa.

Perhaps most revealing is the cooperation between the United States and Cuba over trafficking through Jamaica. A cable from August 2009 talks about multiple contacts between the U.S. Coast Guard and Cuban Interior Ministry.

The Cubans were complaining that Jamaican smugglers were using "both Cuban airspace and waters to transport narcotics ultimately destined for the United States, but their repeated attempts to engage Jamaica on the issue have been ignored."

Cuban officials had shown one plane to a U.S. Coast Guard official. On their way to a rendezvous in Bahamian waters, the crew had made an emergency landing after allegedly dumping 13 bales of marijuana in a rural area of Cuba. In another case, information from the U.S. Coast Guard helped the Cuban Border Guard intercept a vessel carrying 700 kilograms of marijuana.

The cable says that Cuban officials "collectively and continually ... express frustration over the GOJ's [Jamaica's] consistent ignoring of Cuban attempts to increase the flow" of drug-related information between the two island nations to increase interdictions and avoid "being surprised by drugs."

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