Former president announces he won't stand in opposition's presidential primaries, paving way for a heated battle for Juntos por el Cambio's nomination.
Coalición Cívica-ARI leader Elisa Carrió announces presidential run and says she will be a "candidate of unity" for the opposition Juntos por el Cambio coalition.
Peronist leader sparks outrage among opposition by visiting detained Túpac Amaru leader in hospital; Frente de Todos leader sends strong message to Supreme Court and Jujuy tribunals.
Meeting between government and opposition to discuss talks to restructure multi-billion-dollar debt with the International Monetary Fund fall through, casting doubt over bipartisan support for deal.