Argentine ex-president Cristina Kirchner, already serving a six-year fraud sentence under house arrest, went on trial Thursday in a new corruption case described as the biggest in her country's history.

The center-left Kirchner, a dominant and polarizing figure in Argentine politics for over two decades, served two terms from 2007-2015.

Her latest trial comes as her ailing Peronist movement -- named after iconic post-war leader Juan Peron -- reels from its stinging defeat at the hands of budget-slashing President Javier Milei's party in last month's midterm elections.

Milei has hailed the result as a vindication of his radical free-market agenda, which the Peronists, champions of state intervention in the economy, vehemently oppose.

The so-called "notebooks" case at the heart of Kirchn

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