Was it in answer to a specific question? Because, y'know, never fall for that.
Better answer, one which would still get under Merkel's skin?
"Germany under Austrian leadership injured and killed many, damaged and destroyed much, and the German people feel gratitude that the consequences for Germany were not even worse than they were. Thank God for the final victory of the US and its allies in the Cold War."
Thanks Berlin_Freeper. Wanted to use the famous Twain quote, but it turned out to not be a Twain quote.
Proverbs 17:28 -- Even a fool, when he holdeth his peace, is counted wise: and he that shutteth his lips is esteemed a man of understanding.