Possible Clues:

• German's 'Alas!'
• 'Bah!' in Bavaria
• Oma's "Oh, my!"
• Oma's 'Oh, my!'
• "Oh!," to Angela Merkel
• '___ so!' (German 'I see!')
• Merkel's "Oh!"
• 'Rats!' in a Platz
• Dresden 'Drat!'
• Exclamation on the Autobahn