Argentina–Spain relations were made declassified and stated that Prime Minister Margaret Thatcher feared that during the Falkland war, Spain would join Argentina by invading Gibraltar. A dispute arose in 2012, when Argentina sought to nationalize the energy company YPF, owned by the Spanish multinational company Repsol. Spain warned against such a move stating that it would harm bilateral relations if such a move were to happen. On 16 April, Argentina's President Cristina Fernández de Kirchner announced the nationalization of YPF, to which Spain warned of a "clear and decisive" response. Since then, Argentina has recompensed the Spanish government and Repsol over the
Cristina Fernández de Kirchner with Iran for a joint investigation. Nisman accused the president of signing that memorandum for oil and trade benefits, according to hundreds of hours of wiretaps. On 19 January 2015, he was found dead at his home, a day before a congressional hearing to explain his accusation, which caused a great controversy. As of 2016, both the cases of the AMIA bombing and the death of Nisman remain unresolved, and the courts declined at the time to investigate his denunciation of Kirchner. Mauricio Macri, mayor of Buenos Aires, was elected president in the 2015 presidential elections, defeating the Kirchnerite candidate