The trial of Canadian-born businessman Conrad Black began in the US city of Chicago today.
Opening arguments are expected to be heard next Monday, after a jury is selected.
Mr Black once presided over one of the world's largest media empires, but stands accused of stealing millions of dollars when Hollinger International group collapsed.
In what is expected to be a four-month trial in a federal court, he faces charges of fraud, racketeering, tax violations, obstruction of justice, and money laundering.
The 62-year-old businessman has branded the charges 'a massive smear job' and pronounced himself ready to face down his accusers.
If convicted he could receive a 101-year prison sentence and more than $50m in fines.
