On Saturday July 13th, the President of Argentina Mauricio Macri said his country is “moving forward” to declare the armed Lebanese group Hezbollah a terrorist organization. Macri announced this in an interview with CNN Español.

Hezbollah is based in Lebanon but is an Iranian proxy, and is long suspected of carrying out two deadly terrorist acts in Argentina: the 1992 attack on the Israeli Embassy in Buenos Aires, which killed 29; and the 1994 attack on the AMIA Jewish center in Buenos Aires that murdered 85 more Jewish Argentinians.

But no one has ever been brought to trial for these attacks.

U.S. Secretary of State Mike Pompeo visited Buenos Aires Friday, July 19th to take part in a Western Hemisphere anti-terrorist summit. Pompeo visited the rebuilt AMIA Jewish Center to commemorate the 25th anniversary of the terrorist attack there.

There could be renewed cooperation between the two countries with the announcement by Macri. Meanwhile, the United States continues to put pressure on Hezbollah but sanctions finances, according to the Financial Times.

For Argentina’s actions to be productive, it needs its neighbors—specifically Paraguay and Brazil—to do the same. The three countries share one of the most lawless areas in the world called the “Tri-Border Area” (TBA), also known as the “Triple Frontier.”

Hezbollah has thrived in the TBA. With a strong Lebanese Shia presence in the area since the 1980s, when many Lebanese civilians fled the war at home, the Iranians saw an opening to expand their influence and jumped on it. In an excellent piece published in the Small Wars Journal, author Alma Keshavarz explains how Hezbollah is using the TBA to smuggle drugs, launder money, and recruit sympathetic operatives.

Paraguay, in particular, is a troublesome spot where illicit activities are generating into the billions of dollars annually for Hezbollah. Their presence has spread northward to another region of the Tri-Border area between Bolivia, Peru, and Chile. Since the DEA’s ouster from Bolivia by its leftist president, cocaine production increased. Bolivia is rapidly becoming Iran and Hezbollah’s most important ally in South America since the death of Hugo Chavez.