Federal judge Sandra Arroyo Salgado, former wife of late Argentine prosecutor Alberto Nisman, speaks during a news conference in Buenos Aires. Independent forensic tests show that Mr Nisman was murdered, the deceased prosecutor’s ex-wife said on Thursday.  Photograph: Enrique Marcarian/Reuters

The former wife of a federal prosecutor who died of a gunshot wound to the head after making explosive accusations against Argentina’s president charg(...)

A group of prosecutors and judiciary workers lead a march under heavy rain in Buenos Aires on Wednesday to pay tribute to  prosecutor Alberto Nisman a month after his  death in mysterious circumstances. Photograph: Agustin Marcarian/Reuters

Hundreds of thousands of Argentines took to the streets on Wednesday night to demand justice for prosecutor Alberto Nisman, who died in mysterious cir(...)

The charges against Cristina Fernandez de Kirchner are the latest developments in a political crisis in Argentina. Photograph: Enrique Marcarian/Reuters

An Argentine prosecutor has formally charged the country’s president Cristina Kirchner with attempting to cover up Iran’s involvement in the 1994 t(...)

Argentine president Cristina Kirchner waves to  children as Chinese president Xi Jinping accompanies her during a welcoming ceremony at the Great Hall of the People in Beijing, China,  on February 4th, 2015. Photograph: Goh Chai Hin/AFP/Getty Images

A federal judge in Argentina has been appointed to investigate accusations made by Alberto Nisman, the prosecutor who died in mysterious circumstances(...)