1990s, after Mossad was tipped off to the presence of two Iranian agents in Johannesburg on a mission to procure advanced weapons systems from Denel, a Mossad agent was deployed, and met up with a local Jewish contact. Posing as South African intelligence, they abducted the Iranians, drove them to a warehouse, and beat and intimidated them before forcing them to leave the country. Sudan After the 1994 AMIA bombing, the largest bombing in Argentine history, Mossad began gathering intelligence for a raid by Israeli Special Forces on the Iranian embassy in Khartoum as retaliation. The operation was called off due to fears that another attack against worldwide Jewish communities might take place as revenge. Mossad also assisted in Operation Moses, the evacuation of Ethiopian Jews to Israel from a famine-ridden region of Sudan in 1984, also maintaining a relationship with the Ethiopian government. Americas Argentina In 1960, Mossad discovered that the Nazi leader Adolf Eichmann was in Argentina. A team of five Mossad agents led by Shimon Ben Aharon slipped into Argentina and, through surveillance, confirmed that he had been living there under the name of Ricardo Klement. He was abducted on May 11, 1960 and taken to a hideout. He was subsequently smuggled to Israel, where he was tried and executed. Argentina protested what it considered as a violation of its sovereignty, and the United Nations Security Council noted that "repetition of acts such as [this] would involve a breach of the principles upon which international order is founded, creating an atmosphere of insecurity and distrust incompatible with the preservation of peace" while also acknowledging that "Eichmann should be brought to appropriate justice for the crimes of which he is accused" and that "this resolution should in no way be interpreted as condoning the odious crimes of which Eichmann is accused." Mossad abandoned a second operation, intended to capture Josef Mengele. United States During the 1990s, Mossad discovered a Hezbollah agent operating within the United States in order to procure materials needed to manufacture IEDs and other weapons. In a joint operation with U.S. intelligence, the agent was kept under surveillance in hopes that he would betray more Hezbollah operatives, but was eventually arrested. Mossad informed the FBI and CIA in August 2001 that, based on its intelligence, as many as 200 terrorists were slipping into the United States and planning "a major assault on the United States."