Donald Trump is not the only threat facing the G7

Open this photo in gallery: Prime Minister Mark Carney has inherited the task of presiding over the first G7 summit since U.S. President Donald Trump's second inauguration.Adrian Wyld/The Canadian Press Konrad Yakabuski is a columnist for The Globe and Mail. If you remember anything at all about last year's Group of Seven summit, chances are it involves neither the location of the annual gathering of the leaders of the world's advanced industrialized democracies nor the contents of the meeting's final communiqué. Coverage of the summit held in Italy's Apulia region was dominated by viral videos that appeared to show then…