Possible Clues:

• It''s capital is Buenos Aires
• 'Evita' setting
• Its capital Buenos Aires
• Is that a backward artistic fellow in a place across the Atlantic?
• A king, diminished man in a republic
• King captured by spy in a republic
• Not starting conflict with fellow in a far country
• A right toff in a South American country!
• Country fellow at home in area with no English
• A train crash information is coming in on from abroad