Elias Hrawi
From 1973 until 1980, Borrego served as an advisor to the Council of Ministers of Cuba, while at the same time achieving another doctorate from the Central Economic Mathematical Institute in the Soviet Union. In 1997, alongside Che's son Ernesto, Borrego visited Lebanon, where he met with President Elias Hrawi, toured areas near the border with Israel and expressed support for the Lebanese people's struggle against Israeli occupation.