Arrest of government officials outside their home countries became a reality in 1998 when the onetime Chilean dictator General Augusto Pinochet was indicted for human rights violations in Chile by Spanish magistrate Baltasar Garzon... it appears that former Bush officials are aware of the danger.
"That arrest changed everything. It was a moment when international law seemed to plunge forward rather than advance at its more usual lumbering pace. Indeed, the [Pinochet] case transformed the landscape of international law and practice... -- Diane F. Orentlicher, professor of international law and director of the War Crimes Research Office at Washington College of Law