Macri changed Argentina's position on conflicts in the Middle East. During Macri's first week in office, he voided the memorandum of understanding between Argentina and Iran, which would have established a joint investigation of the 1994 AMIA bombing, a terrorist attack on a Jewish organization for which Argentina had blamed Hezbollah and Iran. The memorandum had been ruled unconstitutional by the judiciary, a ruling which was appealed during Kirchner's presidency. Macri withdrew the appeal, upholding the original ruling. He distanced himself from Iran and encouraged continued investigations of the AMIA bombing and the death of Alberto Nisman, a prosecutor investigating the case. Those cases and Nisman's probe into Cristina Kirchner involvement with Iran have special importance for Argentina–Israel relations, and ambassador Carlos Faustino García and Israeli diplomat Modi Efraim praised Macri for encouraging the investigations. Macri further improved relations with Israel and in September 2017, Prime Minister Benjamin Netanyahu became the first Israeli Prime Minister to ever visit Argentina. In July 2016, it was announced that Argentina would grant asylum to 3,000 refugees of the Syrian Civil War. In July 2019, Macri designated Hezbollah as a terrorist organization in relation to the Israeli embassy bombing, and especially related to the AMIA bombing.