Seven years after perhaps the most memorable shot of Barack Obama and Angela Merkel together when they were US president and German chancellor, leaders of the G7 group of wealthy nations paid tribute to this iconic photo at the same location. At the sidelines of the G7 three-day summit in Bavaria’s luxury resort of Schloss Elmau starting on Sunday, participating leaders stood for a photo that is likely to become the one symbolizing this G7 summit. On Sunday evening, after the first round of talks, the leaders descended on the now legendary wooden bench where the famous picture of Merkel and Ob…