““Mr. Steinmeier's meeting with Mr. Kerry, expected to take place Sunday in Vienna on the sidelines of nuclear talks with Iran, would be the highest-level face-to-face meeting between the U.S. and Germany since a year-long controversy over U.S. intelligence activities in Germany erupted anew last week. Authorities have launched investigations of a Federal Intelligence Service worker and a Defense Ministry official both suspected of passing secrets to the U.S.””