"The Iguaza Falls, a once popular international tourist destination in the northeast corner of Argentina, is one of most beautiful places in South America. Located in the Tri Border Area (TBA), which consists of Puerto Iguazu (Argentina), Foz de Iguazu (Brazil), and Ciudad del Este (Paraguay), it is populated with between 12,000 to 40,000 Arabs and their descendants, as well as 30,000 Asians. The area is a lawless zone that is home to Islamic terrorists of Syrian and Lebanese descent and their sympathizers. Together they work in an informal economy of fundraising, narcotics trafficking, smuggling, money laundering, document and currency fraud, and the manufacture/movement of pirated goods. The porous borders of the region enable terrorist operatives of Hezbollah, Hamas, al-Qaeda and their splinter groups to pass through the TBA, easily conducting criminal activities to support worldwide terrorism. The United States needs to do more to counter this threat in the Western Hemisphere. Even with terror groups on the run after three years of intense pressure since 9/11, Hezbollah operates freely, especially in money laundering and the drug trade, in this South American safe-haven. Because of the full-time engagement of the United States in the Middle East, the threat has operated without the required level of attention of the United States for too long. A serious emphasis on the TBA is necessary for American security because of the region's proximity to the United States."
Defense Technical Information Center (DTIC): http://www.dtic.mil/dtic/