Axel Kicillof headed by Hernán Lorenzino. After that, on November 18, 2013, Kicillof officially became Minister of Economy. Kicillof was instrumental in the renationalization of YPF. President Cristina Fernández de Kirchner named Kicillof to the post of Secretary (or Deputy Minister) for Economic Policy and Development Planning in December 2011. He took academic leave to assume this post. In this position, Kicillof oversaw the controversial 2012 nationalization of YPF, the Argentine oil company then controlled by the Spanish energy firm Repsol. It was the largest expropriation in Argentina's history. He justified this action as part of a needed reversal of the Argentinian
Cristina Fernández de Kirchner ended his term of office in 1999 and was replaced by Fernando de la Rúa. Kirchner took part in a commission to investigate money laundering with fellow legislator Elisa Carrió, and got into conflicts with her. She ran again for senator in the 2001 midterm elections. Néstor Kirchner was elected president in 2003, and Cristina became the First Lady. Under these circumstances, she sought a lower profile in Congress. Néstor Kirchner had a political dispute with the previous president, Eduardo Duhalde. Their dispute continued during the 2005 midterm elections. Without consensus in the PJ for a single candidate for senator